Fistful, that's certainly a possibility, and I wouldn't discount that explanation.
The video shows one thing. I'd like to learn what really transpired and forced the rough treatment of those citizens. (Citizens, not civilians, because cops are also civilians...)
Unfortunately, were it to happen on my home turf, I'm one of those who would refuse, based on an obsolete understanding of the 4th Amendment and search warrants with respect to the contents of my home.
I'd lose, because as it turns out, "exigency" trumps the 4th and the requirements for a warrant. ("What did we learn on the show tonight, Craig?")
It doesn't negate the fact that they'd find a couple pressure cookers in the kitchen cabinets, many pounds of black and smokeless powder in the reloading room, and several gun safes full of icky semiautomatic military lookalike guns.