collycat was the player assigned to blu scout for the lobby according to http://beta4.tf2cent...m/lobbies/36008, why he was in spec and didn't claim his scout spot is something I'm not completely certain on.
The scout that spammed achievement notifications appears to have been Kitty (0:0:69164410 - http://steamcommunit...id/MyChestHurts), however which of these guys continuously paused and unpaused the game is still unclear without the STV, due to spontaneous name changes.
It is likely that Kitty received the server pw, despite not being in the lobby, from collycat as are friends on Steam. It can also be said that both collycat and Kitty abused multiple lobby players in mumble across 2-3 games, and while there are many that can vouch for this, there was unfortunately no mumble recording made.
I'll see if I can contact the lobby host and ask for an STV recording.