Right call not suspending. IT was clearly signaling towards Smart and that's why his arm was outstretched. He was pointing. It's also clear, to me, that Schroder was intentionally running to bump into IT.
Did IT swing his arm around knowing he was going to make contact with Schroder? Yeah, probably. The guy was right in front of him. But given Schroder's role as instigator and the fact that IT didn't raise his arm to hit anyone, I think that's the right call.
And thank goodness. Now the C's better not waste it.