Not that you'd have time, but can you drive around the neighborhood and see if someone has some of the logs? Or look for tracks?
I know when some properties near me were being cleared, a few of the neighbors helped themselves to some logs, but they were so obvious it was humorous. I'm talking skid marks on the road, muddy tire tracks leading to their homes, a busted strap with log left on side of the road, etc....
I do tree work and firewood cutting myself, and can do it without leaving nary a trace. But it seems the typical log/firewood thief isn't so skilled or properly equipped. So I suspect it might be easy to track them down if they are nearby. They'd probably stick out like a sore thumb.