Strange happenings with Halloween pictures

What I'm about to write is true, To me its extremely weird. I'll try to explain it as forth right as I can. I use a digital camera which I'm certain most of you realize utilizes a chip. At Halloween I shot a dozen or so photos of my Halloween decorations and a few of the hundreds of trick or treaters. I also have a small printer made especially to make prints off this chip. Today, I finally got around to printing some of the shots I took for Halloween. All of the shots came out good except one. This single photo looks sharp on the monitor. It is a picture, up fairly close to the front door and the creatures around it. When the photo was first printed it looked fine and I laid it aside with others I had already made. I made a couple more prints of some of my more elaborate goblins and when I laid the photos up to cure I noticed the one I had taken of the creatures around my front door was no longer right. Some of the creatures, my talking skeleton butler, my hobgoblin with a tray and my Elvira standee had gone blurred even though others in the same print were respectfully sharp. So, wanting a good print of that particular scene I tried again to print the picture. This time when the print came out of the machine it was sharp. But as I sat there holding it in my hand I watched the same three figures go blurred again. This makes no sense to me. The three figures are standing across the doorway with the Elvira and Butler on one side and the goblin on the other and yet the two statues of schnauzers (about life size) that are permanently kept on the front entryway were perfectly clear. Anyway I went ahead and finished printing the rest of my Halloween pictures. Then I got the (not so) bright idea of printing one more attempt of the offending door. But this time I used the back side of the printing paper. The back side is nonglossy and I figured more absorbant. Again the print came out perfectly sharp and again I sat and watched those same three creatures blur. Like the first two, some of the figures were blurred and some were sharp. Luckily I had another shot of the same view from a different standpoint that did come through in good order. Whatever, you have to admit, it is all a bit strange.