Feet or ball position on out of play

[baldgriff]

The position of the ball is irrelevant to whether the catch was made in play or not. If the player still was established on the field of play then it is an out and you would award bases to runners based on the player taking the ball out of play.

It would be no different if the player had jumped into the air in foul territory, reached over the fence, caught the ball, and then fell over the fence.