Rene is presently in this thread, with Cassidy Summers-Essex.

He is imprisoned by Sinister who kidnapped him from a parallel dimension. He doesn't yet know that he is not in his own dimension. Sinister has been experimenting on him. Cassidy is forced to watch, and is often allowed to go to the cells and talk to Rene and the other imprisoned mutants at night.

Sinister is going to train Rene to use his powers, so he will have excelent control over them by the time he is rescued.

What MAY happen (discussed with Stacy and approved by Gavin) is that Melinda Dyars/Shatter, who has just returned from Sinister's lab, may convince the X-Men to return to the lab and rescue others, including Rene.

After Rene is returned to the X-Mansion, I'd like to ask someone to play Gambit/Remy LeBeau for me, or nextgen_parent Remy Lebeau, so that Rene can have a conversation with him (whom he's never met in his own dimension), and eventually figure out, from certain inconsistancies, that he is in a different dimension, and that only Sinister could send him back, so he is pretty much stuck and cannot go 'home'.