[ding_dong_daddy_from_dumas]

They’re not preventing him from attending.

Just threatening to arrest him if he does.

[Labyrinthos]

I stand corrected. From NY Penal Law:

§ 260.20 Jury trial; defendant’s presence at trial.

A defendant must be personally present during the trial of an
indictment; provided, however, that a defendant who conducts himself in
so disorderly and disruptive a manner that his trial cannot be carried
on with him in the courtroom may be removed from the courtroom if, after
he has been warned by the court that he will be removed if he continues
such conduct, he continues to engage in such conduct.