That video is not a one-off. The guy now works as a motivational speaker doing 2-3 of these SR-71 themed speeches every week (http://galleryonepublishing.com/BlackbirdStores/News.html).

I'm sure he wouldn't let the truth get in the way of a good story.

Other sled drivers have noted how fast & loose Shul can be with the facts.

I haven’t looked that far into it, I just watched that video when Youtube recommended it. The written story that I’ve seen online was uncredited, so seeing someone talk about it made it seem more likely to have occurred (at least to me).

I would like to know exactly which frequency/airspace he was using that allowed all mentioned parties to hear each other.

It's not unreasonable that the SR 71 was listening on the frequency of the airspace beneath them - if the're had been an emergency, it's always better to have a picture of who's on the frequency/within that airspace.