As a former wrestler I love nothing more than getting the back. Legs go in and if the neck isn't there then just start raining down blows. Any person with a good wrestling background will not be shaken off or even let someone stand for that matter.
Lol, clearly you didn't wrestle for long enough, then.
Legs are easy to get out by standing up and shaking someone off your hips. Once their hips are off of yours, its so much easier to shake the person.
To get legs out you can grab someone's foot, grab the outside of the bottom of the foot and pull it in, while digging your elbow into their leg. Basically its painful as hell and can break someone's ankle if you really crank on it.
Also, what I said before hinges upon wrist control. You can't rain down blows if the person on the bottom has any wrist that you've draped over when going for a choke or when placing it on the mat and putting the legs in.
If you leave someone up there to impose their will upon you its absolutely stupid because you're going to get hit or choked out, but its completely different if you have a wrist or both wrists - especially if you have a weak guard. Its just another way to get the fight back to its feet.
I watched some ass clown on WEC try to submit someone the other day by doing a crucifix and then by doing a banana split.
For a crucifix to happen, the guy had to lean over one of your shoulders and get his head under your arm - that should never happen.
To get the banana split the guy had to go to the other guys legs and break his base a part. Had he just stood up when the guy was draped across his back, there would have been no way he could have had his legs separated and been rolled to his back.
Basically I'll reiterate what I said before, giving up the back when you have wrist control isn't bad.
And as a wrestler, you should like giving up your back because its in our nature to go straight to a base, rather than our back.