"Ms. Siegal's strategy to waive the article 32 hearing and go directly to trial was based upon her belief that the case is certain to go to trial anyway, so why waste time and money with a pre-trial."
This is a strange "strategy." Article 32 hearings are free discovery for defendants. They get a preview of the Governent's case. Defendants get to examine witnesses under oath, find out what they will say and lock them into their stories. Those are good things for a defendant. Unless it is part of a plea deal, I can't think of a good reason for a defendant to waive the 32.
I'm a former cop, and I can think of just one such case: the defense is certain that it's a slam-dunk conviction, so they want to have an appealable issue from the get-go. The problem is, the appeal would be based on the defense counsel alleging that they were ineffective and/or incompetent.