All's well that ends well. If I were the cop I would have probably done the same thing, it's a natural conclusion for him to have made. The club handled it well (per the video) and didn't take it to another level.
This will happen more and more, so clubs need to talk about it and come up with a plan. My club does, and this week I went to another clubs meeting and discussed this issue as well. They are on a busier street and about a mile away from an active runway, right in the approach. We had a copy of the FAA directions to local LE to go over as well. In short, bring the aircraft down, have a chat, have your card ready, and that is that. An "attitude" isn't going to help any situation.