This problem is great, being very much like a campus move, and as we all know, campus moves are too few and far between.
With this in mind, here's what to do:
With your left on the sidepull, and your right on the sloper, you paste your rightfoot on the starting hold of Superman (if you must), and, pulling down with your right hand you do a bit of a campus move (see above) to get the sloper with your left. Absolutely no technique involved. Fantastic.
