desiignated Spot

[som44]

This question caused much discussion in a recent meeting;

After a field goal by team A,B- has the ball out of bounds when A-2 and B-2 commit a double personal foul. Official awards the ball back to team B and rules the throw-in is a designated spot throw-in..Is the official correct?

I believe the official is correct based upon rule 7-5-7b ..what do you all think?

Thanks for yor help