I questioned the stairs slam too, as I don't recall this being billed as No DQ. Lashley did whip Hardy into the steps earlier though.
The building was a perfect setting because it gave a unique look and enhanced the crane camera views. Sure it's not a 20,000 seat arena, but it looks different, and that's why it works.
And yes, I like "The Destroyer" name too, though I don't think Lashley will be shooting beams out of his face. Maybe call him "Destroyer Lashley". Works for me...