Thank you for all of the suggestions. Regarding dry heat, serviceberry does not seem to readily respond to the heat gun. I've heated it to the point where I am practically tempering the wood and it still refuses to move. It does, however, respond well to steam and I have attempted to correct the alignment, but have not had much success. Taking more wood off the "strong" side seems logical but I'm not sure which side that is. Is it the side that leans or the other side?