They appearently had a tag line attached. The video doesn't prove this, however it does appear that the tech on the ground might be holding on to something, for about 2 seconds.
But, here's the problem. You do not secure the tag line from directly below. That will in no way prevent rotation of the litter. You have to be off to the side, holding slight pressure. The further off to the side, the more controly you'll have.
PHX PD screwed the pooch over and over on this rescue. Also, contrary to what I read some of the crew said, the littler DID NOT stop spinning right after they begain foward flight. Lies after lies from Phoenix PD/Fire.