Still totally selling out. HOWEVER, it's for a good cause (his career) and being able to further what he wants to do. It is still him whoring himself out, there's no question of that, but being a whore isn't always a bad thing.
Same situation arose when Limp Bizkit was having tryouts for a new guitarist when Wes left. There were so many people who hated LB but were trying out for the gig to make a name for themselves, get some cash and then go off to do their own thing. So as i said, being a whore is acceptable, just call a spade a spade.