A couple of things about this:
1.
ALWAYS remove the prop when doing
ANY type of adjustments on an electric, especially if you need to have the battery connected to do the adjustments. The little bit of extra time it takes to R&R the prop is worth it since it may very well prevent an injury.
2. Everyone missed this part of the original statement:
ORIGINAL: Crash Campbell
Unfortunately the throttle was inadvertently reversed.
Colin
Just my two cents worth.