running the baseline

[CLAY]

I have 2 questions.

Team A scores a basket, Team B takes the ball out of bounds and calls a timeout because it was close to a 5 sec call.

Team B returns to the baseline for the throw in. Is team B
still able to run the baseline after the timeout?

Team A's post player is not out of bounds but behind the backboard. The post player jumps in the air out of bounds but fires the ball from behind the backboard and does not hit anything except the front side of the rim. Is this a legal shot?