New violation: unintended advantage?

[Nevadaref]

Ref in PA,
I applaud your conscientiousness. Perhaps the foul occurred prior to the start of the trying motion, perhaps it occurred after. The timing of the foul is what matters, not when you blew your whistle.

You did the best you could on that particular play. You learned from it. You will handle it better next time.

I do want to ask about what you characterize as a "leg take-down." You wrote that you called a common foul.

Was this action done out of anger for not getting the PC call or as a last ditch effort to prevent the offensive player from getting wide open for a lay-in? Was it a purposeful trip? If so, that sounds intentional to me.