Folks, a bit of empathy here, empathy for law enforcement. If the pilot had been injured, information would have been shared, help would have been forthcoming and all would have been good. Since it was just an outlanding, the pilot knew nothing had happened except that his misfortune involved a passing officer. The officer doesn't know an outlanding from an accident or a terrorist incident ,and he/she is going to treat it the same - who are these people, what happened, what's needed.
I have almost 50 outlandings under my belt and several crash scenes. Some have involved law enforcement. I quickly learned the best thing I could do is show them my drivers license... they all understand driver licenses. None of them ever asked for or wanted to see my pilot's license. Follow that with smile and an explanation of what's going on and the biggest problem is keeping them from trying to help when all you need is for your crew to show up.
All this talk about rights and the 5th is BS. The only worse thing than a cop who is a wannabee federal agent (see glider pilot flying near reactor in NC) is a citizen who is a wannabee cop (see you know what). I don't like any of it and have no soft spot for law enforcement but they can usually be managed.
The pilot screwed this one up the minute he decided that silence was the best policy when there was no possible guilt involved. Pretend like you may need help, give him some who, what and where so he doesn't have to think what to do, and recognize that law enforcement will try to help even if asked not too. Then blow him off and get on with the next day's task for chrissakes.
I have a great story about a crash where I almost blew it because I didn't know who all the law enforcement types in civvies were. Fortunately I figured it out before getting arrested. I'll save that one for another time.
Anyway, soaring pilots don't get shot as the result of flying or landing somewhere...yet. Let's keep it that way.