I watched the "failed edgy comedy" video several times because I did a presentation on it for a class I was taking at the time. (I also admit I didn't see as much early stuff.) I guess it seared into my brain, because I kind of think that the meltdown involved some deep-seated beliefs. So young M.R. is the M.R. who's going to someday hurl epithets at a balcony and call it comedy. It's just swirling around in there waiting to leak out.
You've studied The Incident (tm) more than I have -- hell, you've studied it and I haven't -- but the sense I had is, Michael Richards was angry and so he was looking to push whatever buttons he believed his target had, not unload his own personal baggage. Any particular reason(s) you lean the other direction?