Looking at this strategically it seems that the photographer simply didn't expect the band and the sponsor to be so close. He desparately tries to separate them into two entities (artist and commercial) when in reality they're essentially two facets of the same brand.

It does seem that the band massively overreacted though.

I don't think this will play in their favour now that this has been posted so widely. Apparently the photographer wants the last word on this.