Just found today, there is a way to leave yourself doing something, but actually being disconnected from the server, for example :
Bind : /bind J "+attack; wait 90; -attack; +attack; wait 90; -attack; +attack; wait 90; -attack; +attack; wait 90; -attack; buy ammo"
Causes the player entity to remain and make these actions even if the client himself has disconnected.
Also the client can reconnect and a dialog is prompted with "you has disconnected, do you want to be restored to you previous state", and the client can play, while his first entity is still continuing the action.
Not sure if it is a server bug or a Trem bug in general... This has happened on the Lakitu7's QVM