Hi Bob,

I think by your post you are implying that David's crash suggests only a single channel was interfered with (not trying to put words in your mouth).

In my case, the interfering radio took over all of the channels, but only the retracts were visually affected (meaning neutrals of the other primary control were about the same and the controls just sat still when the interfering transmitter took over).

I can envision a scenario wherein the elevator (or any other channel) on the interfering transmitter had a neutral very different that the "interfered with" transmitter. This could cause a violent pitch change (including a dive into terra firma from 5 feet) while all other flight controls "appear" to be normal (even though the interfering transmitter has control of them).