I think OW either did not see where DJ went or was not trying to arrest DJ or didn't find him a threat b/c DJ was not involved in the "tussle" in the car.
Not sticking up for DJ but DJ already put the stuff back on the counter. Seems like he was not trying to get caught up in that, I doubt he would get caught up in a "tussle" with a police officer.
Watching DJ's passivity during the store robbery makes me doubt he was the one who responded at all to Ofc. Wilson's order to get onto the sidewalk, much less using his Eddie Haskell voice. I think DJ was silent, waiting for MB to do/say something, and MB just kept walking.