No:
10:05 p.m.: First shots fired
10:15 p.m.: Final shots fired
10:17 p.m.: First officers arrive on the 32nd floor
10:55 p.m.: Officers arrive in a stairwell near the gunman’s room
11:20 p.m.–11:27 p.m.: A SWAT team finally breaks into the shooter’s room
Seems to me there are enough gaps for escape. Guest elevators, stairwells, staff elevators. Probably went up a few floors, then down. Just a theory.
Actually I had thought of a similar theory at the beginning but discounted it once I heard about the injured security guard. I thought the guard was accompanied by police who then busted into the room. The first account seemed to imply that.
It all depends on the timeline and whether the security guard was alone or not.
However another issue is — the ownership of the guns found in the room. To believe such a theory one has to believe ISIS or someone got this dude to bring all his guns to that hotel room ... or ISIS kidnapped him and helped him bring in the guns.
Not sure if this theory manifested itself here or not ... but this concept is a viable approach for ISIS because they don’t expend their terrorist resources and they get the FBI bogged down chasing a phantom suspect.