I don't know about DIR -- but nothing he did was taught in PADI rescue class either.
PADI specifically tells their rescue students to not rip an air source out of a breathing diver's mouth as that's a great way to kill someone.
PADI specifically teaches to not dump weights and ascend unless there's compelling reason as an overly rapid, or worse, out of control ascent can create far more problems than it will solve.
PADI specifically teaches to not force your help on someone who is not in distress.
PADI specifically teaches that after rescuing someone, never make a big deal out of it as that's a great way to embarass or humiliate the person who needed rescuing (let along the person who didn't).
Forget DIR. This guy couldn't pass any NAUI or PADI rescue course out there.
Yeah, he's batting 1000 on the "what not to do" series