I would have to know the type of vegetation it is, woody or grassy, the rainfall, successive plant populations.
And I can't quite see up the hill, over the horizon of that initial limited landscape, a small patch actually in that large landscape.
That tall dominantly dispersed plant seems to have it's original top, rounded and slightly bent, now if that species came up rapidly after May 10 in lots of rain, it wouldn't be trampled. But if it was slower growing it wouldn't look like that, especially if it was woody.
Anybody live out there and know the vegetation on that hillside?
And carbuff, I would think people would still be returning to search that site if it was really where the bike was found. It could be where the bike was found, of course, it is just that it doesn't look like any significant presence has been there and of course if BM was misleading someone that would make him look suspicious wouldn't it?