No advice here, but to say that I have a B5 (2011 - same engine, yah?) with 270 miles - no false neutrals, or any other shifting trouble at all, except for a good solid clunk into first gear (kinda like my old BMW, which did have false neutrals, by the way). I think mine's idling high.
Clutch cable is the first thing I would check - thanks to the previous actually helpful replies! Good luck!