Okay, then I retract the trial part. I had assumed that his defense would claim that the original trial was tainted, retract his guilty plea and try to start over so he could get a “not guilty”. The more I think about it, the less sense it makes. I stick by the rest of it, though.
If he’s extradited, he gets a slap on the wrist and becomes a hero, then he can come and go as he pleases. That’s my story and I’m sticking to it (unless something else gets pointed out).
Unlawful Flight to avoid a sentence is in itself a crime. Nowadays, the usual procedure is to sentence a bail-jumper in absentia. I don't know whether that was done in this case.
Remember, it was Roman Polanski himself who vitiated the plea deal by running. Now, he could as easily get a very harsh sentence as a slap on the wrist. Indeed, he could get more time for thumbing his nose at the court than for the admitted rape.