He wouldn't talk to her for 6 months because she touched that f*cking award 10 seconds before him?
Those Hollywood guys do have weird problems man!
Oh, gee, I think Forsythe (and even Grodin) are right here: Joan would do silly things to make people mad on purpose, then play the victim of their 'irrational' anger when it works.
I doubt Forsythe was upset so much by the award grab incident she sanitizes in the telling, but just a pattern of "Oh-I'm-such-a-diva" bull$hit from Collins which probably had become incredibly tiresome by then.
It's the same reason Linda didn't really want to do LEGENDS with Joan twenty years later: Joan wants to convince you she's really Alexis by being "difficult" in order to convey stature and get attention.