I started over today. Using the auto-toggle button, and the spider walk cycle research ( I was on the right path, just not quite getting it). It still slides a little (missed a couple of movements with the back legs), but I think it is a vast improvement from yesterday. At the rate I'm going I may have my full scene shot today! I'll post as soon as each 50 frame segment is complete.
Oh, and I fiddled a little with the camera settings through Dragon (nice feature), added some white dry brush and a soft spotlight as well. This way you should be able to tell what the spider is grabbing. Do you know what it is?