I'm not so certain about that. He has been saying many "good things" about Romney and supports Romney. He has recently been promoting Santorum as a stalking candidate to keep him in the race to keep the conservative votes split. If you watched the debate last night, Beck is following Romney's lead in the hope to keep Santorum in the race as long as possible.
I'm not so sure about anything Beck says or does. I'm not sure about his mental stability.
He could well be a Romney supporter, but between Newt and Rick, he supports Rick. The anti-Newt stuff has been really awful, IMO. And I prefer Rick to Newt.