Bad Backcourt Call by Partner. What to do?

[Rich]

I had this happen earlier this season, except it was a tipped ball on a throw-in with no frontcourt control that ended up in the backcourt.

I hit my whistle to get my partner's attention, went to my partner, talked to him, the light went on, and he declared an IW and we played on. He thanked me at halftime.

Of course, my partner that night is one of my best friends and I am completely comfortable doing that (and with him doing that) at any time. It's a different dynamic for the OP. Maybe it shouldn't be, but is.