I suppose (though have no way of making sure) that the post that drove him off Twitter was this:
and the predictable reactions that followed.
The last burst of tweets on his Twitter account are effectively an apology, which abound with contemporary ideological tropes. Among them, the following:
(the one above made me gape. imagine — being able to consider the larger context before you hurl your insults to be regarded as a kind of privilege)
(or this: the ability to reconsider and readjust your perception presented as a privilege)