A “he said, she said” jury trial in a foreign jurisdiction with a political judge, and linked to a notorious criminal who died and so could be considered to have escaped justice - I’d consider that a hugely risky proposition for any client, even one who was 100% innocent.
Running away, doing a Bill Clinton "Didn't have sex with her" and then having the court find against him is just as risky.
His lawyers have probably never seen an ego that big and didn't know how to handle it. No point trying to treat this as a normal client because he's been allowed privileges, FoI etc that other clients wouldn't have had.
He can't win, either way. Liars always get found out in the end, and the rest of the world has already made its mind up.
PA is just a meme who's only ever going to be remembered for VG and for not being able to sweat.
He's thrown his whole family under a bus to save his own reputation, which was dire even before all this.
Now everyone's understandably looking very closely at what the rest of the RF have been doing.