Game may never end

[jwild1665]

Team A did have the possession arrow and could have missed the rim to create a alternate possession situation.
I believe this comes under the section for delay of the game, which is not limited to the specific situations mentioned (huddling at the free throw line, etc.) In addition, there is the catch-all provision that the R can make any decisions not specifically covered by the rules.
Other points: (1) You could not ignore the violation. The team B player behind the arc would step into the circle and stand next to the shooter as he was shooting. The other players would walk into the lane in front of the shooter. All this before the ball was released on the try. (2) This is similar to the warning for delay for violations by the defenders on out of bounds plays. Warn after the first violation and T after that. You are in better shape here concerning a delay because it is obvious that it is an intentional delay tactic. (3) As indicated by one of the replies, missing a shot is not a violation, but stepping into the lane is a violation. Therefore, missing the shot is allowed, Team B's behavior is not.