That sounds more like GPS jamming. First time I noticed it was during a long drive back from a gig in Wales, everything fine & dandy, until the "...take the next left..." voice prompts started to send me on a Magical Mystery Tour - then the map...
I've noticed that my Garmin GPS has been acting flakey, sometimes freezing up and having to shut it down to restart and sometimes it still cannot find any satellites...
As a 'newbie': the first time you encounter a forced drop into 'ATTI' mode, you will have panicked and over-compensated with the sticks, inadvertantly creating most of the problems you experienced, this isn't something new. A lot of new drone...