RE: Interference or Failure?
My experience and observation is that the radio is considerably more reliable than the operator. Now that is just my experience and you are not being accused of duffing it.
I have a Mustang that will always turn over on throttle up if the speed is too slow. I had two different Cubs’ that would unexpectedly turn over on take off. Believe it is called a snap roll and it happens in half a heartbeat. I have been known to take off with the wrong airplane set at the transmitter. I rebuilt a trainer three times one winter because the ailerons were backwards. Got one flight for each rebuild.
It is important to find the problem and avoid it the next flight. A test pilot is suggested. Another head and mind is often valuable when diagnosing problems.
Bill