Suspected hacking

Are you sure it wasn't just follow-up cc? I know Morg binding is long, so you'll have the time to think on it anyways.

its a binding not a snare.

http://leagueoflegends.wikia.com/wiki/Binding

From that game...

Xerath's E and Morg's R stuns. Naut's ulti stuns and knocks up.

I doubt these people were "hacking" no matter they say to you, friend.