Given he didn't have the resources to properly defend himself because they intentionally froze his assets (which in itself, is an unacceptable practice I think), I don't think so.
Maybe a group of 2-3 judges in an appellate court will decide that protecting democracy is more important than "whoring out" (excuse my language) to US interests. It's a slippery slope, and all you need is one precedent.
I don't like the guy at all, but this is just unacceptable in every way. Pathetic performance by the US really, if you can't even take on someone in a correct and ethical way, on equal footing.
He got extradited on bogus and far-fetched premises, I don't think he's going to win. The US wouldn't pull all these strings to get him extradited just so he could have a fair trial.