He sucked as a leader, got 1000 chances and failed. Now because he doesn't get his way, he threatenes to QUIT.
I personally could care less if he is a racist, was just telling a joke, or was PO'ed and let comments fly out. It was a DUMB thing to do on his part. My guess was that it was a smartassed remark. However, smart ass remarks can come back to bite the entire party.
As for quitting, if he quits completely and throws the senate to the dems, it is HIS fault, and ONLY his fault. Not those that pressured him, HIS. Period, since he makes the final choice.