I don’t think it’s “nerves of steel,” as much as complete arrogance, with a dash of sociopathy.
He didn’t try to play the part of an innocent man at any point here. He basically challenged law enforcement to build a case.
They did.
Just because we are going to (almost certainly) see a mountain of evidence against him, doesn’t mean that he will be capable of seeing it the same way.
I think he’ll fight this no matter what, and admit to nothing at any point.
If he gets spectacularly lucky and happens upon a “rogue juror,” fine.
We’ll just do this again.