If Satoshi were watching and cared, all he'd (she'd) have to do is send an appropriately-signed text via Tor or whatever saying Craig is a liar. Coming forward in any substantial sense would be unnecessary.

That Craig is proceeding with this big hoax regardless means either that A) he knows who Satoshi is, and knows that Satoshi is cooperating/dead/apathetic/etc, or B) he's looking for sufficiently short-term gain that there's low enough risk that Satoshi would intervene in time.