5.1 In the event of injury to a player(s), the officials may stop the game.
5.2 If the ball is live when an injury occurs, the official shall not blow his whistle until
the team in control of the ball has shot for a field goal, lost control of the ball,
Three - Teams
withheld the ball from play or the ball has become dead. If it is necessary to protect
an injured player, the officials may stop the game immediately.
5.3 If the injured player cannot continue to play immediately (within approximately 15
seconds) or, if he receives treatment, he must be substituted unless the team is
reduced to fewer than five (5) players on the playing court
So i understand from this that the ball was dead as it had yet to be inbounded, however Simpson took longer than 15 seconds to recover so should have been subbed off.
Woolpert himself exacerbated the time frame due to his incorrect complaint about stopping the game.
King James video shows Woolpert has already started complaining before the 15 second mark.