Thresh's Hook vs Skarners Ult

Haven't been so puzzled since the time I saw a Hecarim and Sion Charge into each other using their E and Ult.

Not really a bug. He was lifting off when he grabbed him with his suppress. It wanted to execute thresh's hook (and did) and because his path ended and skarner's ult was still going, it continued to execute skarner's ult. Ultimately pulling him to skarner. It just looked weird is all.