When Scott saw Mosher at the door, he took the initiative to disarm himself. Mosher testified that Scott told him "I have a gun." In a normal situation that's the proper thing for a CCW holder to do, for instance, at a traffic stop, although I think Scott should have said, "I have a CCW and I'm armed." It's much less threatening.
I believe Scott then lifted his shirt to show that he was armed, and then began to reach for his holster and gun. Up to this point, I don't believe Mosher had issued any commands. But when Scott started to bring the gun and holster out, Mosher became alarmed and issued all the commands in less than two seconds and fired his weapon as Scott moved his gun toward him.
Quit changing the facts to suit your narrative.
Scott had his back to Mosher, and Mosher touched Erik from behind. "[Shai] Lierley testified that an officer--presumably Mosher--touched Scott, who pushed his arm away."
That was 9 seconds longer than Erik Scott got before the circular firing squad.
Geez - it's not enough that Metro had a one-sided smearfest at Erik Scott's expense.
Now we got the Internet Metrobots making $hit up wholesale to further smear Scott, and justify Mosher's panicked actions.