Pretty rude to call somebody a liar and/or troll.

From moodier's post on the Futaba forum:
We did try several other SS transmitters and only these 2 units interacted this way!!They willbe sent to you but for now is a very scary situation at our field.Needless to say we are being very careful to check all FASST units when we fly.We tried sevral other FASST units...

So all you internet commandos need to STFU and wait for the results. From the indications the 6EX and the 7C have the same transmitter ID code. Stuff happens, even at Futaba. Would not be the first time Futaba screwed up. So let's see what Krysta finds out.

Fritz