LOL... they do this everytime they are in front of me at close range! =) I guess it is just something to do with the stick inputs being harder to predict, that is, when a plane is going straight for the most part, the updates are easier and smother on your FE, but when they rapidly swirl around, you are catching updates at what... every 1/4 a second or so (guess) so it appears they are flopping and spinning. I hate it, but I am not sure if there is an easy solution. In fact... I'd bet there isn't, or HTC would have already fixed it. =)