When I am the race officer and there is a tight time limit, unless there is something very pressing on shore, I stick around and get everyone's finish. Then I score them "unofficially." In the past, I have found that people really appreciate that very small gesture - it is a recognition that they sailed the course and crossed the line, and it lets them know how they did against the rest of the back-of-the-fleet, even though the scores don't count. Makes better talk at the bar.

On your original post, I agree totally with what Matt said - RC should abandon the race. It simply isn't fair to the fleet and that is the ultimate litmus test.