Who gets the ball out of bounds?

[toledotom46]

Situation: 1st quarter 2 minutes gone by, A1 is inbounding the ball in the backcourt after ball was tipped out by B1, A1 trying to inbound the ball to A2, B1 is warned to not reach over the endline to prevent the throw-in,as ball is reset for throw-in B1 maliciously whacks A1 in the face during the throw-in, trail official calls Technical foul on B1. Reporting the foul on B1 Ref is informed A2 is not in the book, What do we have now? A technical on B1 and a technical on Team A for player A2 not being in the book, seeing the clock was not started prior to warning, there cannot be a False-Double-Foul? Does Team B receive the ball at Half court following the free-throws? or alternating possion arrow? This actually happened in Maryland the past year in a girls high school game.