And another suggestion. Looks like it's leading to a loss of signal and a incorrect fail safe setting.
Try this: Turn on the TX, then the plane, do NOT start the engine. Get where you can see the throttle (or throttle servo). Turn off the TX. Does the throttle go to idle, or full?
Sounds like bind failsafe puts the throttle at full, and setting the TX on the ground is causing a loss of signal, and thus a failsafe.