Not sure what the out come was mate i would have gathered my decoys up and move on to another field as there are so many to choose from it should be easy to escape any drama it's just silly behaviour and maybe the Police would move them on for public order or something.
Unload gun and sleeve and make safe. Walk over and take photo and detail from Anti's in a calm manner. Pass over info to land owner and await any further instruction. Sit back in hide with coffee and pork pies, and see who can remain in a cold wet field the longest.