NO way. BUT, I'd sit Ray after nine or ten minutes and leave him on the bench the rest of the game if he doesn't start hitting some shots. If he pouts, tough tootsies! It would be a good opportunity for him to show he's really a team player.
I prefer Pierce, Posey, and TA(for ten minutes, why not?) at the two guard right now.
Should Sam get another chance? Possibly, but for short minutes and hope that he plays well. He's certainly capable, maybe it's just age?
This is the playoffs, it's not about Sam's or Ray's feelings, or how great a career they've each had. They're both playing horribly. Ray seems to have more apologists, I'm not sure why. There's no need to either crucify or defend them, I just think that neither one is helping the team win, which is the main idea.
So to put it briefly, start Ray, and if he stinks again, take him out early and go to plan B. I'm not sure what plan B is exactly, but there are plenty of capable players on the roster.