Happened in a pick-up game
 

A1 ends his dribble by picking up the ball. He starts a baseball pass to A2 but stops himself in the wind up, causing the ball to go 10 feet straight up in the air. He catches the ball without moving his feet.

Has he violated? If not, can he choose either foot as his pivot or must his original before-pass pivot still be used?

No violation. His original pivot foot remains the pivot foot.

Same as casebook play 4.15.4SitE(a).

1) what's the call if he catches his own pass?
2) while moving what if a player goes to pass and fumbles/muffs the attempt and then gathers it and comes to a stop?

It's impossible to answer either of these questions without knowing the movement of the pivot foot during the actions.

If you deem that the toss up in the air and subsequent catching was a controlled movement, then the player must adhere to his original pivot restriction. The casebook play JR pointed out governs the situation.

However, if you judge that the player lost control during the pass and was merely fortunate to recover the ball, then the fumble rule would come into play and the player may do whatever is legal after recovering a fumble. In this case, he may pivot with either foot, but may not dribble a second time.

So it is a judgment call.

If the player does not move his pivot foot, then no violation has occurred.

If the player moves his pivot and the ball did not strike the floor, then an illegal dribble violation has occurred per the already cited 4.15.4 SitE.

If the player moves his pivot and the ball was allowed to strike the floor on the "pass", the "pass" becomes a dribble because it meets the definition of such. In this case, since the player has already dribbled, a second dribble violation would occur. This is per a past Interp issued by the NFHS.

If there is no player control, then there cannot be a traveling violation. The player is allowed to recover a fumble and pivot foot movement doesn't matter while doing so. If the player did not do anything illegal AFTER recovering the ball, then no violation occurred on the play.

That was a bit confusing. sorry.

1) Player picks up drrible and goes to pass but the ball slips and flies in the air ... the player moves to catch ... what is the call?

2) Player has already dribble and picked up dribble. Player goes to make a chest pass but ball is fumbled and drops to the floor just in front of the player .. .can the player leagally recover?

The answer to both questions is: A player can always recover a fumble.