A confidentiality agreement trumps that notion. If the guy signed an NDA and then violated the NDA within its duration, he can be sued by TRT. The court can also grant an injunction against Facebook, even though they were not involved in the NDA, from utilizing that information... and Facebook can rightfully sue the person they got it from as well.
Of course, that's all assuming that the guy really did violate a confidentiality agreement. For all we know, TRT's claims may be entirely specious.
IANAL, but I've worked for companies that have confidentiality agreements, and they can and do take breaking them very seriously.