Maybe. He thought he would be the absolute ruler of the US, but even the President has to answer to the Judiciary. Members of Parties nominate and confirm judges but those judges are more loyal to the Judiciary than they are to the Party that nominated them. Trump has already gone after two federal judges. I imagine most federal judges are not kindly disposed to a man who belittles them and threatens them.

The appeal court panel he now faces is fairly certain to uphold the EO stay because they will think he will lose the case too. If it gets to the Supreme Court quickly, with even a partisan vote, they will tie 4:4 and that will leave the EO on hold. Donald is looking at his first defeat and he's only been in office for 3 weeks. He's going to be very upset about this.