Time to get serious, Smite.

First, use Sand Tomb on the ground in the funnel to stick that Spinarak to the ground. Next, use Rock Tomb to surround the funnel of sand with boulders; if you can't fully surround the funnel with just one Rock Tomb, then just creat small wall of rocks between you and the funnel. Finally, hurl some rocks into the swirling sandstorm with Rock Slide so that the rocks keep spinning with the funnel; some may hit the trapped Spinarak (hopefully :biggrin.

Sand Tomb~~Rock Tomb (surround funnel; wall b/w Smite and funnel)~~Rock Slide (into funnel)

I've studied Spinarak's moves, and I do believe this will be a toughy to get out of

Man, this is harder than it seems! I have to think really creatively here, and I'm still losing! How am I doing so far?

Edit: I didn't edit any of my attacks when I edited just now, I'm just putting the attacks in yellow like I always do, but I forgot!