Sometimes wen i drive high rpm and then drop to neutral or push in the clutch my car just stalls out. This doesnt happen frequently but it happens during the worst time.
Lots of MSP's have a problem with an idle dip under the same circumstances as your stall, but usually the RPM's bounce right back a second or two later. It could be a couple of things, but try cleaning out the EGR valve. That is a good place to start. There is a how to thread on Stealth Wyvern's profile.
That is a link to the how to. But be careful when you are taking off the bolts around the EGR. It is kind of easy to round them out with the wrong size socket wrench...
vacuum leak maybe? check your vacuum lines or you could check for loose clamps. If you are stock, check to see if the clamps on your intercooler pipes are tight and that the pipes are still connected to the intercooler. Any of the plastic pipes could be cracked.