"I hate stallers."
One thing I never do is stall. I'm always on the move looking for a submission or a good position or an escape. If Hanma has any integrity, he would attest to the fact that every second I was on the move, and the only way he could stall me was by laying his weight on me and holding my body or my free arm(s) down, even so I would be attemping a sweep or a positional advantage with my legs. By the way, the roll did not go for 20mins, and I did not "hang on" for 5 mins. There are other guys I train with in class who can attest to the fact that I never stall.
"I also hate people who get their gi pants in a bunch after a hard training session against someone with less experience / more size, strength, athleticism, whatever"
I grappled with several guys who were stronger and more athletic than I am during that session alone. I had absolutely no problems with them, and they were going 110% aggression at me too. In addition, these guys were weightlifters as well. No issues there.
"How about showing him an effective way (besides slamming) to beat overhooks or underhooks from guard"
Earlier in the class I spent some time openly showing him and another guy how to get a good position, and how to execute a good figurefour armlock. Again, no issues there.
"calling the new guy a "motherfucker" and refusing to roll with him?"
After we grappled, he held his hand up we slapped hands as per unspoken custom in class. I did not "refuse" to roll with him, in fact when he lost and talked about a BJJ rematch, I told him that we'd see each other and roll in class every week anyway so there's no need for any "rematch" talk. Then we swapped partners just as everyone else was doing in class, and had been doing for the entire half of that class. Everyone had a roll with everyone else in that class. Before I grappled Hanma, I had already rolled with 2-3 other guys, and then rolled with another 2 guys after Hanma. The last roll for the night that I had went for 25mins, I was absolutely exhausted by then and could not finish the fight earlier.
"Gakami also deserves to get soccer kicked in the face for holding the gi choke too long IMO."
After he tapped, I held on for maybe 2 seconds. But in response your post, I also refer to JDee's post above:
"Kneeing me in the head TWICE so I think fuck this and Kimura his ass from the triangle position. Not hard but enough to say "don't try that shit again mate!"
In response to Hanma's post:
" we were using these extra thick mats usually used for gymnastics."
These are not "extra thick" mats - there is a reason why we aren't able to train takedowns on these mats... Secondly, you knew there were gaps in the mats exposing the floor in certain parts where the mats have come apart... I'm fine grappling under those conditions but if we were to include slamming then I would change my strategy and approach.
"I've seen numerous people doing the same sort of thing at training,"
Training with who ..?