Cornell's emancipation proclamation: 'slave no more

The future of Audioslave - which has looked pretty dubious for the last few weeks - has finally been smothered with Chris Cornell confirming he's out. Not that sort of out:

"Due to irresolvable personality conflicts as well as musical differences, I am permanently leaving the band Audioslave. I wish the other three members nothing but the best in all of their future endeavors."

But why would you wish them luck if you disagree with their musical direction so much you can't stand to be in the same band as them?