You mean it is possible to subdue someone without executing them in the street? Learn something new every day, maybe the Ferguson police was aware that it is possible.
Here are the details via the LA Times.
“And they were like banging on the door, trying to get it open, and they’re like, ‘Open the door, open the door,” Nicolle Blankenship said via the Los Angeles Times. “Finally when they got it open they yelled, ‘Gun,’ and then all of a sudden you see them shoot him with a Taser. And he got shot with a Taser and he went down to the floor, and then they handcuffed him.”
There was no mention of War Machine having a weapon in his hotel room, just a pizza and some cash.