Best way to help partner?

[ChuckElias]

I had a situation at camp that I forgot to mention here, but I wanted to hear different opinions on how to handle it.

Three-whistle crew. I am C. A1 shoots a long jumper from the Trail's area. Lead blows whistle, fist up, and announces "No shot!". Ball (of course) swishes through the basket.

I had no idea who the foul was on, but I was 100% sure that the whistle blew while the shot was in the air. Did the foul actually occur before the shot? I didn't think so, but I thought we ought to make sure exactly what happened.

So, here's what I did, and please feel free to give alternative approaches. I sprinted into the lane to prevent the official from going to the table. When I got to him, I said, "Ask yourself if the shot was in the air". He thought and realized that it was in the air and then went to the table and told them to score the basket. This was camp, so I didn't know him and didn't want to "overrule" him or tell him "the basket is good".

Anything I should've, or could've, done differently, more diplomatically? Any better wording I could've used?

Chuck