Wrong-direction jurisdiction

[ODog]

Four minutes left, tie game, high school-aged players, 2-man crew.

A1 secures an offensive rebound near the free-throw line, turns and unwittingly drives downcourt toward Team B's basket. He makes it all the way to the hoop without a whistle and converts a layup.

At this point, play is blown dead in order to ensure Team A inbounds the ball and Team B is credited with two points.

Team A players and coach rightfully question why there was no whistle for a backcourt violation. The only explanation was that the T, then transitioning to L once A1 decided to head the wrong way, was caught off guard and didn't put it together until it was too late.

Two questions:
1.) Could you stretch this under the "counting/canceling a score" provision of the CE umbrella and wipe out the hoop (and the egg off the T's face) by saying it should have been backcourt and awarding Team B the ball at the spot of the violation?
2.) Is this a situation where you, as the L, would whistle the violation from 35-40 feet away once it became clear your partner wasn't putting it together; or is that something you just let him live/die with because it happened right in front of him and WAY out of your coverage area?