OK
first, impatience almost get Sam killed. Twice.
Now
It would possibly get us killed all 
As you say, in mz imagination, I was still at that chamber with trapdoors, surveying next room with the drone (I believe the room with trap spell).. If GM jumps us forward without oportunity to get good search, what can I do. It is even possible that Mouse will return at the end of the week to find out he is the only one left to face bloodmage. Bravo.
Your drone went into the room with a trap spell. Radar has a certain range, so I am always introducing you the next chamber, that is within range. Since the doors were safe, I've allowed you a peek into the room as well as a glimpse of movement there.
It didn't took long before Netz went further to the curtain and listened to what is happening further (which is happening regardless of how long you stay in previous chambers because of what happened in the spell trap room), and Sam carried over by shouting through the doors.
If you felt jumped over without an opportunity to perform detailed search, I can understand that, but the world isn't standing still around you.
Further on, you made a search in the trapdoor room, and there was no sign (physical, matrix or astral) of them ever walking on their feet into spell trap room. There are no hidden tunnels revealed by the radar, and there were no sign earlier of them retreating anyhow. Was there anything else you wanted to search for?