It was SO late!
YouTube - Rome Hit on Horton - Canucks at Bruins - R4G3 2011 Playoffs - 06.06.11 - HD
I'll even say that the damage came from the head hitting the ice. I didn't think there was enough body to head contact. Does that make sense?
He didn't have the puck though. Sort of like a late hit on the QB.
I've seen later hits before(thankfully the hit players didn't suffer as much of an injury as Horton), but the hit in this case was definitely late.
I agree with you 100% about his head hitting the ice probably being the culprit behind Horton getting the concussion. His head bounced very high when it hit, and that is never a good thing even with a helmet on!8O