[Edges]

Also, Takedown in this case doesn't need to mean that they are pressed to the ground or even made horizontal. One could just rule that once the TKed guy has been lifted and has failed to resist the contest for a Takedown, they now suffer the penalties associated with being prone. The fact that they are in the air vertically and contorted is ruled as a special effect.

If the GM still thinks it's unrealistic, cut out the need to spend a turn lifting the victim and rule that it only takes two turns. First you grapple with TK then you attempt a "Takedown". If you succeed, the victim is held a foot off the ground and suffers the penalties of being prone and grappled (-4 to dodge and can't retreat).