I agree with telling them that the next time they harass you, the police (and the local newspaper) will be in on it again. They refused to acknowledge the pedophile problem, even though it was on a mainstream source and not some apostate web site this time. And yet they had the nerve to harass you about worshiping the sun (which is the excuse they probably used). I bet the kids like all those lights (I'm sure they do not like the idea of getting molested under threat of getting destroyed and then silenced).
At this point, you are going to get disfellowshipped behind your back, unless you disassociate first. The choices are to write the letter or let them waste their time trying to disfellowship you. Once either happens, and they ever egg your place again or hound you, they can then get disfellowshipped themselves for associating with a disfellowshipped person. And if you have a second witness to the event or some video footage, there is a better probability of it. The least it will result in is more embarrassment for them as they get thrown in the paddy wagons and the incidents start showing up in the newspapers.
And one more possibility. One more hounding or egging incident, and you have the right to place apostate flyers in all the doors in your territory, similar to the pizza flyers. People will look at those, and then when the witlesses call on the doors, the householders will not be interested. It ought to be interesting when their congregation begins to totally stagnate with zero fruitage after the egging.