Well no paramedics even tried to asses him, just left him bleeding on the floor.Amazes you guys didn't see it. If you slowed it down you can see Quicksilver is the one to do it. You could see the blur at the beginning of the scene. I think he's going to make their lives hell for leaving him dead.
Mind controlled Bucky who doesn't rememeber it.
Ok, so then the question becomes, who told the Vision it was ok to pour coffee grinds in the disposal?
This. Nat knows what buttons to push.Natasha. She did it deliberately to piss Tony off.
At the end, Zemo plays a hacked security video of Bucky dumping coffee grains in the disposal and Tony goes berserk.