I know that main thread is ungodly long....but I was one of the ones up all night monitoring the live feeds, both video and police scanners.

That is the suspect that they arrested after the first shootout.....NOT Tamerlan.
They made this guy lay in the road and strip naked before they would get near him in case he had explosives on him.
He was released not long after...

At the time this happened...this guy just happened to be walking in the wrong area and was carrying a black backpack.
I saw him splayed out on the ground and he was scared shitless and trying his best to be a statue.

This was happening well after Tamerlan had already been taken to the hospital.