I didn't listen to the sound.
So why were they interrupting the guy washing his hands
No the guy shoplifted from Wal-Mart and went to hide in the Applebee's restroom. Then the officers confronted him there and took him outside to question and arrest him. He then chose to remove himself from the gene pool in a most efficient manner, because there is no way in hell that play was going to end well for him...
since the officer made sure to scoot the table knife further away from him.
One would be wise to get a potential weapon like that away from any suspect, reputation or not, in a situation like that.
Back when I had to confront people I always either put myself in between the person I was talking to and potential weapons or I called them away from said potential weapons to lessen the chance of them suddenly grabbing a nearby object and skewering me or knocking me over the head before I could react. I also tried to position myself between them and any area nearby that the potential to have a weapon (such as a vehicle, RV, tent, etc).