*shrug* I'm probably not remembering all the details given its been a couple of years, but I'd still call what you described communication.This is unlikely.
Crows are thought to be relatively good at recognition and memory, sure. But I severely doubt they have a way to communicate detailed information like what a specific human being looks like. I suspect if a crow is attacked, it is more likely that the attacked crow (or another crow that witnessed the attack) either calls a warning or displays some sort fear/anger reaction when the attacker is sighted. The crows in the vicinity react accordingly.