^^^ It's not a Flip Piledriver, it's a Sunset Flip. And Murdoch is a good wrestler...
As for moves banned by WWE, I agree with Monkey & This Guy. Especially in the case of the Piledriver...
We really only see the Tombstone Piledriver these days. Even commentators now call a regular Piledriver a Tombstone. Let's use No Mercy 2006 as an example...
Mid way through Kennedy's half decent match against Taker, Kennedy lifts Taker up for a Piledriver. I was thinking, "Whoa! I haven't see this in a while!" and Cole is going off his nut saying it's a Tombstone. That move saved the match.
Now, from that, I realized WWE don't mind if you pull off a so called "Banned" Move, but only if you have a decent history of pulling it off. Tommy Dreamer can pull off great Piledrivers, and not botch them, so WWE use them. Same goes for any wrestler and any move...