this seems to be the "go-to" move.... when getting jumped in the MA.....
to me it is a last ditch move, one only done when absolutely necessary.
No I don't mean split-s and run in the typical encounter when many better options are available. That won't kill the enemy. I mean when you're at very low altitude, any lower and the split-s will land you six feet under the ground, and there's a faster enemy behind you following through your turns who has you dead to rights.
I'm in a 38 at 1200ish ft, 200ish mph, flaps out and turning in a tight furball, then I see an enemy 38 fixated on my tail at 600 out and closing just a bit. If I turn left or right, I'm dead. Go up, I'm very dead. Go straight, dead. If I split-s at that altitude I'll recover just below the treetops, hopefully. I know the enemy 38's closing on me, so he's faster than me. And that speed advantage means if he tries to follow me through the split-s, he'll have a slightly larger turn radius and end up hitting the trees. His options are to follow you and auger, or break off the attack and lose his angle advantage.
If he's good, the enemy will follow just long enough to make you commit to your split-s, then he'll do a high yo-yo and be right back on you, though you'll have more room to work with. They're the minority.
Most enemies start to follow you through the split-s, see they're going to auger, and break off, briefly lose sight, and focus on recovering. Meanwhile you quickly reverse back into them and shoot 'em. Most enemies do this.
Then the target fixated, tunnel visioned enemies try to follow and end up giving you an auger kill, and a good chuckle.
I guess the point is, don't fear the ground, use the ground. Be one with the ground.