At the very least, the 2 agents involved in his case being found to be corrupt and having forged evidence, should cast additional doubt on the murder for hire.
I'm not saying he didn't do it, but had that been known at the time, I think it would have been less decided that his sentencing should take the alleged murders for hire into account.
He should be tried for that separately at this point
It went to appeal and all those points were addressed. But I agree that it would have been much better to actually prosecute those murder-for-hire charges. Even if acquitted, the judge can still take the accusations into account during sentencing (due to the different evidentiary standards).