You hit the nail on the head when you said..." never thought he would bed in this particular spot". IMO, a big, old buck will bed where he has (almost) never had a hunter approach. That's why he is there. If he decides to leave, he has a number of other places where he feels safe and has probably never had a hunter approach.

He may decide to return after realizing there is no longer any threat. The fact that you kicked him out 10 days ago should not be a factor for his return. If he's no longer bedding there, it may be because Oct is such a transition month and he decides to move because of a different food source or because his hormones are beginning to kick in.

I think additional scouting is requied to get a better feel for the woods. A lot can change in 10+ days in Oct.
Good Luck.