What is Trump thinking?

I am torn between two theories:

#1 - He was borderline crazy and has now gone over the edge. He's probably not sleeping much and it's clear he can no longer remember what he said even a day or so ago.

#2 - He never really wanted to be president - just wanted to prove he could be if he wanted to. Closer it gets the harder it gets and he's not having fun any more.
He will keep on driving the GOP crazy by being unpredictable and unreasonable to push them to the point of "un-nominating" him - before the convention or after - doesn't really matter.

They will be scrambling trying to play catch up and get another candidate in there and he will be milking his revenge. After all, they caused it - not him.

In the meantime, his "supporters" in all their genius will throw him some riots he's worked so hard to build up.

Just Donald being Donald.