I didn't ask what he used, but told him I'd use carb cleaner, and then brake clean, since it dries fast and leaves little residue.
Yesterday afternoon, I took my EGR off and checked it over. It really didn't need cleaning and, unlike his, wasn't sticking at all. It easily plunged properly. I decided to do a quick cleanup with nothing but light air pressure and re-installed it. Thankfully, the gasket stayed in place and nothing leaked. My car runs just slightly smoother, but still idles at about 2,000 momentarily, then drops to what looks like about 1150. So I listened closely and traced things out in regards to vacuum lines. I found a leak, but couldn't repair it or replace the line just yet(no time). Anyway, I'm fairly confident this is the root of my problem and will likely replace the hose tomorrow or Sunday.
What really bugs me is, the car will coast in 1st gear and just run right up to 2,000rpm while doing it. This makes it move, what, 15mph? That's faster than I like to travel on my unpaved drive, which is some 950 feet long. Therefore, I simply must trace this problem to it's end and UTTERLY DEFEAT IT!