Some of these rocks are reported to weigh several hundred pounds. There are winds that can moved cars/destroy houses, but it seems to me that such winds would also erode the tracks. Also, if wind were the causative agent, I'd think some of the tracks would show evidence of tumbling, not just...
The Wikipedia article says that the tracks were visible in 1948, so if it is a confluence of natural and anthropogenic conditions, it probably doesn't involve sonic booms.
I keep reading about ice, but I have to wonder how likely it is for the smaller stones to leave tracks in a frozen...