Situation from yesterday

[Junker]

I worked a tournament all weekend, great way to get ready for the year, but had an odd situation at the end of a 6th grade girls final (imagine, an odd situation in 6th grade girls?!). Anyway, I'm T, my partner is L. He is inbounding the ball on the baseline after held ball # 467 in the game, game is tied 18 all. A is inbounding B is defending. A1 is running short on the 5 second count and throws the ball at B1's feet. The ball bounces back and hits A1 oob. My partner "screws the pooch" as they say and calls A ball and gets the girls ready to inbound. B coach starts to try to get my partner's attention but gets mine and wants me to come over and talk. I don't go as my partner is already handing the ball to the inbounder. We end up going to overtime and between overtime B coach wants to know why I wouldn't talk to him. I told him that he needed to call a timeout if he wanted to talk to me. I was T and had now idea what Coach B was complaining about . I tried to explain to Coach B that if there was a question about a judgement that my partner and I can talk about it, but I couldn't hold up the game to go talk to him without a timeout. Looking back, I should have explained that this was not a correctable error so we just play on. I did tell my partner he did the right thing in getting the ball in quickly because had we reversed his call after Coach B complained, we would have had a madhouse on our hands. Luckily B won in overtime. Anyway, sorry this is long, but any thoughts on what could have been done differently, besides not making the mistake in the first place? Thanks in advance.