Yep. And since he was recorded as saying he was going to get his gun, he may well have been.
The video is not complete. It doesn't show him resisting arrest (on a warrant), doesn't show him being tazed multiple times, and doesn't have the audio.
There is other video and audio out there. I saw it this morning on my friend's phone, but I cannot find it. Maybe it's deleted while the investigation is being completed?