Player in paint leaves court

[ktg2010]

During the Minnesota/Purdue game I witnessed this scenario and wondered if there should have been a call. Also, would there be a call under NFHS?

Player A1 drives the baseline and stops the dribble in the paint under the basket. After becoming surrounded by Team B players on three sides, he realizes there is no shot. He pauses for 2 seconds waiting to find a teammate for a pass. A1 passes to A2. Player A1, now surrounded by team B players on all three sides cannot move out of the paint, so decides to leave the floor, walk out of bounds along the baseline and reenters the court outside the paint. I presumed this was done in order to avoid a 3 second violation. He was not forced out (unless you consider his movement being restricted being forced out)

Should there have been a call for illegally leaving the court? What call?