@spitfirekrl1:
He doesn't seem to mind much he pretty much ignores it except when she pins him and he ends up on his back. Then he'll start snapping at her face which doesn't seem to steer her away from her objective (we have no idea what that is at this point).
When she pins him she wants submission. She wants him to not struggle and nip and he should calm before she lets him go. Momma dogs do this to their puppies, it is part of puppy education. They do it most to the puppies that are the most pushy usually. In our last litter, Zeke always expected to get his way and he was the one who was pinned by both mom and Rio the most. He learned that by submitting he was allowed to go back to play. When he crossed the line, by playing too rough or invading the adults personal space he was pinned. He learned the limits to play and how to behave appropriately with adults from this. The other pups would get the same treatment but less because they didn't push those boundaries as much.