Yes, please please please for the love of God give up jiu-jitsu.
Look, you don't SLAM someone in jiu-jitsu unless you clearly have permission to and the guy knows it's coming. It sounds like he may have breached some etiquette, but when you speared him and slammed him you completely crossed the line. Seriously. Guys like you, who bring tons of ego into the equation, are the worst pain in the ass to train with.
First, I was in his guard, beginning to pass. I placed my knee in his inner thigh and as I was doing so, I placed my forearm across his throat and pressed down very hard. I could see his face turn red. (I only did this to send out a message to let him know, if he wants to continue at this pace, I will match it and then some.) As I was about to pass he sweeped the leg I had under my knee and caught me in a triangle.
Second, we started again. I could tell he began to get even rougher and more aggressive, and I didn't have a problem doing the same. I ended up in his guard again, and this time I was passing in different manner when he caught me in an armbar. I then grabbed his belt with my free arm, stood up, and drove his neck down pretty hard onto the mat. I could hear him grunt....he let go of the armbar, I passed extremly fast into his side mount pulled off a kimora.
We began again for the third time, this time he didn't clap my hand (something that is done prior to rolling, which shows that you are ready to roll, and also shows respect). That is when I had enough of his attitude. I turned up the pace and I basically speared him (we were starting on the ground...on our knees). As I speared him, I drove my shoulder into his face and flattened him out. He began to crawl backwords off the mat, while I was in his guard. I wasn't having any of it. I lifted him up and I basically power-bombed him on the mat, I could see his head ricochet off the mat...
So I'm training and I'm in this guys guard. I can't pass so I use my forearm smash his throat. I ended up triangled. Am I a dick?
In the next match I get caught in an armbar and instead of trying a legit escape I spike the guy on his head and neck, while he is dazed I sink in a quick kimora. Am I a dick?
Next I decide not to bother getting caught by a guy who is better than me so I spear tackle him, land in his guard and then powerbomb him hard. Am I a dick?
Btw the answer is You're a complete asshole.
I assume by 'shoving the forearm into the throat', he is talking about the thrust choke. I've had higher belts use it on me quite a few times. It's a legit move, and nothing to get upset over. It's very risky for sure, but if you know what you are doing, it can be a good way to get someone to open the guard or react in a way that is to your advantage.Judging strictly from the facts that you posted, you are the guilty party. You don't shove your forearm into someone's throat just cause you don't like the "pace".
You don't slam out of an armbar just because he misrepresented that he wanted to go "light". And you sure as hell don't powerbomb someone for any of the perceived slights that you have suffered.