Safe to consume pork basting liquid directly?
I'm not sure I was able to tell exactly what he did when watching the video.  What I know is that you should not use a marinade that came into contact with raw meat as a brushed on finishing sauce.  Once it has come into contact with raw meat, it is not safe to consume uncooked.  It is possible that he marinated the meat in a portion of the marinade, and reserved a smaller portion (no contact with raw meat) to use as a finishing sauce.