If the player had got in there as I did he would have had to be standing IN the pipe to get to the printer - I was the only person in the space when the printer was taken.
So was it IN the Pipe or was it on TOP of the Pipe?
Makes a huge difference with the ''grav gun'' possibility.
Noclip isn't announced to non-admins, same with every command for the last few months. And since Duer was at class during the incident its more than likely that someone just came in grav gunned the printer and left.
Unless this is recent change No Clip does indeed yell out that it's being used. Other commands tell only Admins while some tell only you when you use them.