It would appear that the Motion to Disqualify is an indication that MoM wants to proceed to an SYG hearing which would have been a lost cause with Lester in place due to his obvious disdain for and bias against GZ.
There are pros and cons to that decision.
What are the cons???
If GZ fails to convince a judge at the Dennis Hearing that he more than likely acted in self-defense, his trial strategy will be revealed to the prosecution. Since it is an affirmative defense, he may also have to take the stand at the hearing, always a risky gambit; but I'm not sure on that point. Cboldt should have more info on that.