Roux where idk where you grapple but there was no throw setup there. Tonon is known for his flashy entry's and this was a perfect setup with misdirection. I would call it a bait and switch tactic where he slides out to get his opponent to circle and then blasts head on. You see his gripping hand comes down to tap the knee and his posted hand comes up to push his shoulder. The cartwheel is to evade the guillotine choke.