This is a sign that he is admitting defeat. If he has to leave then he wants to leave a mess.
Trump is not a lawyer. He is only the man who tricked a dementia addled father into letting him control the family fortune. Some of his acts then were to cut off Mary and others from their inheritance, and he even took away healthcare from his own nephew. Trump is such a nice man.
I hope he does it. It would be the perfect end to the Trump administration. To piss off the military over some selfish nonsense only to have the veto overridden.