This is bad news indeed. I have feared it would come down to this. I can only assume a riff in your BIAB track closely matched something already released by Eric Marienthal.

This brings up a critical question for PGM...do they even own the full rights to what the RealTrack musicians have played? Do they closely control what is played over chords or do they let the musician riff whatever they want to when recording their parts? If the latter it seems quite likely something a musician would play on a RealTrack might also appear on a piece of released music by that same musician. If that occurs who owns that riff?