Too bad you didn't get your degree, EasTexasTic, but sometimes life just messes things up. Like you, I read everything I can about criminal justice and murder cases.
I was re-reading Yvonne's interview again, too, and now I think she may have meant that the impersonator was standing 'outside' the door and therefore 'not' in the building. I think he was lurking outside peeping in the door.
We have more evidence and interviews today. I wonder if that red oval rhinestone is a clue. It could belong to the killer.
Also, at this point I'm not suspecting Max Snyder because he would've hurt himself because Jared was the main speaker.