Robb, I'm not disagreeing that any of the claims made by the RC owner are a big stretch. If he's going to pursue any legal course of action, he has a big uphill battle ahead, IMO.
This is the part that I was disagreeing with you about. The RC owner can file whatever type of frivolous civil suite he wants, regardless of any criminal proceedings. Let's suppose for a minute that the FCC does decide to take up a criminal case because they feel some law was violated (not gonna happen, btw). BammBamm could be found not guilty at trial and then the RC owner could STILL file a civil suit. Because the burden of proof is so much lighter in a civil case, BammBamm could still lose the civil suit.
I don't know what evidence exists neither does anyone else except for the OP. To me, it seems like a big stretch that anything is going to come of this, regardless of what the RC owner does. This whole thing sounds like posturing by the RC owner in an attempt to get someone else to pay for a new plane by threatening a suit.