Looks like there is some kind of movement, hard to tell if its ghosting or what but the catchlights in the spiders eyes look a little smeared. Hard to tell.
Also a finer point but is that a piece of lint in the top center, or is it on my computer? I shot with a MKII for years and years so I know how easy they show dust and lint.
It wouldn't surprise me if the spider or grasshopper moved a little bit. I didn't see the lint until you pointed it out. Good eye! The DsMKII is a dust hog that's for sure. One of the things that I don't like is having to clean the sensor but that's part of moving to digital.
I hope that my DsMKIII is better but I'm not sold on Canon's sensor cleaning technology yet.