I've just watched the video again and the pull-out does appear to be a single-plane pitch (no rolling) so a gate height at the top would have been valid, providing that speed was under control. It is not, however, a quarter clover, as the pull to inverted happens before reaching the vertical, with a rolling pull that will reduce height achieved at the top.
Incidentally, this is not speculation - we have a video - it is observation. I could, of course, be mistaken. I will not, however, speculate on why the manoeuvre was chosen or flown in this manner.