When for that last loop on my last pack of the day just before landing. Upon review of the DVR footage looks like I accidently hit the disarm switch (Jumper T-Lite - my finger rests between the arm/disarm toggle and one other toggle). I might have to look at a different grip on the radio or a different switch for arming. Now I now why some joypad style radios have the flat toggles instead of the standards ones. Luckily this was fresh water (snow melt) and everything works after drying.
Captured by a Walksnail 1s VTX with its onboard DVR.
Song used in the video is:
Bad Ideas by Kevin MacLeod.