The gang connection is an ugly truth whether Cain is affiliated or not.
The Surrenos wouldn't generally let someone wear their colors without some sort of repercussions regardless of how much of a badass the guy is. I'm not insinuating anything here, it's just very odd to me considering the Surrenos and Nortenos are HUGE in Salinas, CA. And contrary to popular belief, he threw up the 13 when he KO'ed Nog (not the ASU pitchforks...his thumb was out).
I could care less either way but coming from my background, I'm quite skeptical.
You say shark I say hey man, Jaws was never my scene and I don't like Star Wars