Help with this one

[budjones05]

Team A is shooting 2 free throws. On the 2nd try, as soon as my partner throws the ball to the shooter, a player from Team B steps and enters the middle part of the lane(in between the basket and the shooter) A1 shoots the ball and player from Team B sends the ball into the 3rd row bleachers. I asset B1 with a Flagrant T(ejected), re-shot the 2nd try, and gave Team A the ball back at half court.

When I try to tell people of my officials association, we all got mix answers. Some people say that since B1 block the free throw, we should of ejected him, count the basket for goal-tending and shot 2 more for the T. Others say that since the lane violation happened first, we should just penalize Team B with a substitution shot(No T) Others say that what I did was correct. What do you guys say?