<human>: So tonight I was at a local wing place with my friends just grabbing a bite, when this guy is getting really rowdy by yelling at the staff and other customers. We were minding our own business for most of it and we saw that the guy went into the washroom for about a good 10 minutes or so. Fast forward those 10 minutes and this guy is back out yelling and is heading towards the door when he focuses on an older man sitting alone eating. The guy swung on him and me and my friend ran over and pinned him down in a matter of seconds. We were told by staff that cops are coming and to bring him outside so we started to drag him to the door. His girlfriend/wife/crackwhore started to violently pull at my arm so I ripped my arm away and told her to fuck off. He hears her say "DONT TOUCH ME" which made no sense because I hadn't even touched her.He hears this and goes into a rage and breaks free and hits me in the face. I slam this guy into the wall fairly hard and hes still hitting my face. I then pick him up and slam him onto a table that some old couple was eating at, causing food, glass, drink, etc to go flying and I begin laying punches because at this point I just saw red after being punched in the face multiple times. I get yanked off of him, and he picks up a chair and almost hits me when another customer gets it away from him. At this point I hear my buddy "Holy shit , where's his arm!" I look over to see that this man has only one arm and I failed to realize this the entire time. I'm now the guy who beats up cripples...I don't really feel bad because of the situation, however my friends won't let me live this down.

Can you condense the text into a few key points?
<bot>: Tried to assist staff getting violent man out of the restaurant, ended up getting into a fight and winning, man turned out to be a cripple. I beat up a cripple.