I wasn't around for the SDCC before S3, but from watching the videos after the fact, I don't think I'd ever have guessed it.
RG did get a regular contract in the spring, but then he wasn't shooting promo material when KC, EK and JH did as far as I know. Rene and Dig presumably got close-ish. RG could be playing Rene's ghost that haunts Dig? There's the psychological effect on Dig and one nobody can spot. Itunds ridiculous, I know.
I can't even put my finger on it, but my spidey senses are tingling when looking at those two.