Our Strange Neighbor

So a few months ago, our neighbor emailed everyone to announce he was changing his yard to a low-water-usage landscape. We all expected a few cactus to appear, but instead he ripped out his entire lawn and put in rocks. ROCKS. The change was not met with enthusiasm. At night he sneaks out and rakes the rocks into a smooth layer. Whatever. Then two weeks ago a huge pile of dead palm fronds appeared in a pile and he has now organized them into a fence. Or at least I think it's a fence . . . or perhaps some strange interpretive sculpture?? Or could it just be a way to further annoy everyone else in the neighborhood!! I see cars stopping to try and figure out what it is. Free expression has gone to far on this one.