Not sarcasm, he is a jerk but I am trying to figure whether it would be in character or not. It sounds more like a play from the “vulture capitalist” toolbox. Although I suppose it could fit with a vision of unburdening a company to allow rebuilding.
Check out the time he bailed out his brother and Solar City at the expense of Tesla shareholders. Definitely some sharp financial engineering type shenanigans going on in that deeply conflicted transaction.