After the nightclub poisoning hit, the Iceman runs into a friend (with his wife) outside and stops to speak. Then he leaves with Mr. Freezy. Later, Ray Liotta is upset that he "messed" up the hit. How?
I believe the man that was killed in the nightclub was Demao's friend. That's why he was so pissed off about Richie. That and him doing murders behind his bosses back.
No, see, Liotta was upset that he DID the hit. Iceman hit one of Liotta's friends in that scene, without Liotta's permission. If he hadn't run into his friend who blabbed about it later, Liotta wouldn't have known that Iceman did the hit.