We can only hope everyone sees the evil of a guy offering to ID the remains of one young murder victim in exchange for going light regarding his latest young murder victim.
The Peruvian authorities don't care about the Natalee Holloway case, so anything with that case is not going to affect their "Stephany Flores case" in Peru. They're pretty much said, very explicitly, that they want nothing to do with the Natalee Holloway case.
You're not going to see that.
What you might see, though, is that the US authorities are going to impress upon the Peruvian authorities that they make sure that they are able to get their hands on Joran van der Sloot, when his sentence is done in Peru. I can see that ...
I heard one Peruvian say they'd allow Arubian officials to come to Peru and question van der Sloot later, but no possibility he'd be going to Aruba.