If he thinks there's another hen hanging around, he will come back to that area to investigate. Once the hens start laying, they'll sneak off back to thier nests in late morning. That's often when lonely gobblers will start chekcing places for other hens.

I read an article many years ago on when gobblers were killed. The most common time was 9:30am.

If he does this again in the same area, call a little (maybe 1-2X) when you're sure he can hear you but can't see to well. If he gobbles back at you stop calling. Wait, and then scratch in the leaves to sound like a hen picking around in the leaf litter, but don't call.

Watch carefully, because they'll if you can sell the scene to him, he may slip in quiet.