Cleaning the oil pick up without dropping the pan?

That's a good idea. As soon as I drop the oil i can look up inside with a boroscope. I wonder if I could pull the distributor and gear and run the oil pump in reverse to dislodge the pieces from the pickup screen. Just thinking out of the box here.
You'd run out of oil in a second or so, unless you rigged up a feed on the outer hole of the filter area into the block, or through the filter housing.