I don't believe it...

For one, he's filming "The Decameron" in Italy right now with Mischa Barton.

I think Christensen is just bitching because everyone hates him for ruining the Star Wars franchise and he probably feels he is damned to Mark Hammill's fate. Plus I imagine he'd be just as terrible an architect as an actor. But you bring up a good point JD; I think Hollywood endorses a lot of typecasting and "blacklisting," against certain actors.