Those plastic choreboys work ok but the metal ones are sure to give you the results that you got. Try this next time if you end up with stuck-on food bits: Fill the dirty pan with hot tap water, or heat a panful of hot water to near boiling on the stove. Let things set for a little while--a few minutes is enough-- then use one of those plastic choreboys or a one of those scouring sponges to swish the stuck stuff away--the stuff will come out pretty easily, along with some, but not all of the leftover grease. Wipe it out. As for the spray-on cooking oils like Pam or Smart Balance, I've found, surprisingly enough, that they work really well in a somewhat-seasoned pan, and add to the seasoned finish. The spray oils are something I tried about a couple of years ago and have been using them, depending on what I'm cooking, ever since. It can't hurt--it's nothing more than cooking oil in an aerosol form. I don't think you'd end up any worse off than if you wiped your pan with a paper towel dampened with the same kind of cooking oil.