Alright, an update on how everything went down.

Although I played with the idea of apologizing the whole week, I never really got to it. partly because I was likely scared, partly because things were pretty busy.

Yesterday, as we were preparing for the final presentation, 2 weeks of radio silence were ended, as he(!) called my team mate, asking us to come by in the evening, and specifically if I would be there as well. Since it felt to me like he had dealt with the situation, I jumped at the offer. I went by that evening, and took specific care not to make any remark that could be interpreted wrongly and might inflame him. Things went pretty smoothely, and especially the realisation that he was just operating from a entirely different set of values than me made anything I didn't agree with a lot more bearable. He didn't really leave any good opening for me to apologize, so it was only when I left that I got to it. He didn't even let me finish the apology though, but shrugged it off with a 'it's okay', in a let's-never-mention-it-again kinda way. His way of dealing with it was basicly acting like nothing ever happened. I settled for that.

The next day we had the final presentation which went pretty awful. My collegue mostly forgot what he was supposed to tell, so told everything really slowly and not very coherent. Because of the need to finish within time, I had to throw away more or less what I had planned to tell and make a shorter version with references to what was told earlier where I told it in a understandable way, but I was not able to do so, and because of the stress I also bumbled around telling the presentation incoherently.

This most likely was something that professor wasn't very happy about since he expected us to do pretty well, based on his introduction as well as his comments the night before. Considering how I think he works, he may feel our bad grade (we'll have to redo the project) is a blemish on his reputation. in the very least, the look on his face afterwards was, though covered with a smile, not one that made me eager to adress him and discuss how things went.

So that's how things stand now. There is no more out-in-the-open hostility between us, although he may be harboring some frustration still. I probably won't be having to deal with him anymore, so I could leave it at this, and go on with my life. What do you guys think?

Pickle:
don't take this in any way as profesional advice or anything, but I presume you've looked into the possibility of there being some harbored frustration you're not willing to admit, overflowing from time to time, being the cause of your random anger flares? That's the best I can do for a possible explanation for your problem. If you didn't you could try and look into it.