Shooting FT When Player Fouled Out

[brainbrian]

B1 fouls for the 5th time. While my partner is telling the coach and dealing with him about the 5th foul A1 shoots two free throws and makes them both. After she makes them both my partner realizes the free throws were made. At this point coach B says the two free throws shouldn't count because he was still using his 20 seconds getting a sub. I do not see anyway he could be right, but am I missing something?

(Yes, I know my partner and myself put ourselves in a bad situation by not communicating in this situation.)