I don’t think that’s a Marine. Marine’s don’t wear patches on their sleeves other than rank insignia (stripes, cross rifle’s, etc.) That is probably an army soldier. Regardless, yes, Marines today wear new “digital”-style cammies.
I hope its a hoax as much as the next guy does, but I'm still waiting for some definitive proof either way.
To me, the fact that the dog sounds like a guy going "Yip! Yip! Yip!" as he flies through the air makes me think its a hoax. But the fact that the guy is in hiding and his family doesn't want to talk makes me worry its not.