Absolute rubbish. In a nose-low unusual attitude, yes, you should pull the Gs smoothly, and earlier than later (before the speed has a chance to increase further), but never use speed brakes. A G load of 4 (which is well beyond certification limits) will increase stall speed by a factor of two. Suddenly you have a stall speed of 350+ knots and you guys want to destroy the laminar flow further? I’m not sure what to think of the comments here. I’ve never ever heard of this. My opinion is deploying the spoilers in a high-G dive recovery is going to put the airplane in the ground twice as efficiently. But go ahead and think it’ll help.