Legal inbounds play?

[rockchalk jhawk]

In a BV game a couple of nights ago I saw something new (to me). Coming out of a timeout late in the game, home team has the ball for a baseline throw in after a made basket. Visiting team has been full court pressing for the past few minutes. H team comes out of timeout and lines up standing out of bounds on the endline like they are getting ready to take off in a race in the opposite direction. I'm at C and my partner who is the new trail getting ready to administer the throw in and I just kind of look at each other with blank expresions and then play on.

As ball is handed in to player for throw in the other four players take off in a dead sprint for the other end of the court and at about the free throw line in the back court one kid peels back and accepts the inbounds. Obviously the defense had all been duped by the initial sprint for the other end of the court and the kid who peeled back was wide open. They ran it sucessfully two more times.

So my question is, legal or not?

After calling a time out after having already inbounded the ball one time, they tried to run the same play for a spot throw in. We made the four not inbounding the ball stand in bounds for that one. Were we correct there or could they have started OB for a spot throw in? They still ran the play sucessfully, they just started on the other side of the endline.