This is why I should always keep notes. I remember actually discussing all this but had no memory of the whole thing.
So, sarun was hard pushing AM didn't receive any message. We know sarun targeted WPK. We know Legend bus drove WPK and WAD. So, WAD is the one who actually received a message. All this while, hammer is ignoring what's happening between sarun and AM. sarun is going viagra hard on AM and suddenly comes the write up "Alwaysmind is Jarvan". And after a while Nitty adds "hammer targeted Alwaysmind". And sarun drops a "thanks for the game".
NARRATIVE: WAD received message instead of WPK. Told his teammates. AM mentioned it. sarun said it's impossible cause he knew he sent it to WPK. sarun is going hardcore on AM. hammer is just trying to not be involved in this discussion. Mafia use a daykill to take out sarun (Nocturne's ability most likely) and Lissandra one-shot to change the write up to say "Alwaysmind is Jarvan". hammer probably targeted Alwaysmind at night (protection?). Suddenly, hammer claims he's the one who sent the message.
So, AM and hammer scum together, looks like.