This Part 3 and finale of the tale of Mr DDTW, or the worst coworker I've ever had to deal with. I suggest you start from the beginning if you don't have the context, it's been a trip.
Part 1: https://devrant.com/rants/4210605
Part 2: https://devrant.com/rants/4220715

The problem with this man threatening to snitch on me to the professor if I didn't revert my commit was that he backed me into a corner. Letting him go at his pace with his quality standards would have ruined the project for the rest of us, and I'm not going to let three other people's grades suffer because one was lazy. I'm the PM, team lead, the guy who will ultimately be held responsible for this project succeeding or failing and the mediator of problems.

So I snitched first.

The professor knew us. He had an idea of how we worked as a team, who was enthusiastic about this subject, who was diligent, and who wasn't. It'd been half a semester and he wasn't stupid. I'd also taken the not-so-minor task of testing our software and handling all the little integration problems between components and between the professor's server. This had resulted in several calls between me and him because he'd been flying by the seat of his pants with some of the upgrades he'd been doing to the server code and as the fastest group we were the ones running into all the bugs on his end. And he'd also noted our prior complaint and seen the discrepancy in commits, author tags and hours logged. Mr DDTW had been graded significantly worse than the rest of us. So when I sent him a goddamn novel about our team's internal problems, the bomb was set. And so we get to the conference call, with everybody panicking and with no clue what any of this is about. Except me.

Dear god. That call was pure catharsis. Never have I seen a man get demolished so hard. Mr DDTW got a 45 minute LECTURE, a goddamn SMACKDOWN, about how he needs to take some responsibility for this team effort and that in the real world he'd have been fired. And the professor was so incredibly serene throughout! He could've blasted him with the rage of a thousand suns but he said it in such a way that Mr DDTW's only real responses were "yes", "I understand" and "I'm sorry". An entire semester of this useless fucking bitch being nothing but a leech on our team in three separate projects and he was finally getting SCHOOLED. And then, it gets even better. The professor asked how we could solve this problem, as Mr DDTW needs to do work to be graded but he can't hold us back.

I dropped a suggestion: As I had implemented the module in a way that worked, we could carry on using my version while Mr DDTW could work on a separate branch. Everything else was working reasonably well for an MVP, we just needed to improve and test now, so if Mr DDTW got it working we could merge it back into the main branch. This solved the team's problem of not being able to progress, it solved Mr DDTWs problem of not wanting to fail the course, and it solved my problem of not having to work with this shit-for-brains for the forseeable future. A weight was lifted off my shoulders. No more Mr DDTW. No more bitching and no more shitcode. A grating arsehole that had been bugging everyone all sememster put in his place and out of my hair.

On the way home from uni that day, I rang a friend and told him the entire story as I needed to get it off my chest. Every time I brought up a problem, an issue, a setback, an argument, he made a remark.

"Damn, if only he just... did the work."

Every time he said it it was in a slightly different way, but every time it made me laugh harder as he just didn't stop interrupting me with the same comment. If only he did the work. But the funniest part of all was how right he was. Mr DDTW had so many opportunities to just sit down, shut up, and do the work like the rest of us, but instead he decided to do fuck-all until he got flak for it and proceeded to dig his own grave. What sort of delusional entitlement, sheer incompetence or other dumbfuckery was he suffering from to make such terrible decisions? It's his last year of university and he still hadn't learned to just do the goddamn work (I would later find out that his friend had covered his shortcomings a lot and was apparently the reason why he hadn't flunked out of uni yet).

And so ends the story of Mr Didn't Do The Work the worst person I have ever had the displeasure of working with. We never did merge his branch as we ran out of time during testing. The professor passed him, possibly out of pity or just so that he wouldn't have to resit the course and burden some other poor sods. We weren't the top scorers this time, partially because of my shortcomings as PM but mostly because of the huge delays and manpower deficit, but we did well enough to pass the course with some very high grades. With one exception of course.