Trump remains subject to the jurisdiction of the court. Blanche is right, the purported reason for the order no longer applies, but Merchan can do what he wants. Careful, though, if Merchan keeps it in place, it gives PDJT great argument for a 1983 filing.
Merchan just has to file paperwork to end the gag order and so far he has not done that.
How does a 1983 filing help?