Violation? When?

[CMHCoachNRef]

Team A scores a basket. Team A sets up aggressive man-to-man press. B3 goes out of bounds to inbound the ball. B1, very tightly guarded by A1 appears to be trying to get open by cutting hard to the endline on the opposite side of the lane from where B3 is standing for the throw-in.

B1 is unable to get open and continues over the endline (remember, A1 had just scored). B1 continues to cut toward B3. Eventually, B1 cuts BEHIND B3.

Scenario A: B1 eventually stops to the right of B3. B3 passes the ball to B4 and B1 returns to the court along with B3.

Scenario B: B1 continues on to the court and receives the inbounds pass.

Scenario C: B1 continues on to the court, but does not receive the inbounds pass.

Violation in any/all cases? For what?