Apparently there is a gentleman's agreement between both states on whether they're allowed to use it.
Queensland gave NSW the all clear with Ennis all those years back, we'll see if NSW extend the same courtesy.
Looking at the footage again, if it was up to me, Wallace would be gone. There was no need for him to go into that collision with the approach he did. However, based on prior incidents with Matt Scott, Sam Burgess and Ryan James I'm leaning towards the NRL letting him off.
In my opinion, Wallace isn't that big a loss for Queensland. I know he's a meme on here because of Unbreakable's outlandish statement, but seriously he's a dime a dozen workhorse in a bottom 8 team.