What to do?

[Adam]

Okay, here's one that was brought to my attention this morning from a game last night that I wasn't involved in.

Halftime, and visiting team is late coming back. Just after the horn, the girls start trickling into the court, but no coach. Players are all there, but the coach is late.

R doesn't realize it, so puts the ball in play to start the 3rd quarter. C realizes, but doesn't say anything because he's not sure what to do. L presumably doesn't catch it either.

Question, if the whole team is there after half time, but no coach, what do you do?