What about the hiding in the closet videos?
In the video from the closet, he (supposedly Hogg but who knows) says something to the effect that Cruz has been “neutralized” and they had been in the closet for an hour waiting for SWAT to evacuate them.
So, how would Hogg or whomever know the situation had ended and why was he still whispering?
An hour in the closet is plenty of time to get to the school and pretend to be a survivor.