He is banking on the publicity that making the additional defamatory statements will give him with his voting base. He is hoping that his re-election will at the very least stall all the proceedings against him, and he may even be able to quash some of them after re-election.
The more forceful he is at his defense, the more his supporters dig in. He doesn’t care about defying the court, because he hopes to make the court irrelevant.