In light of the recent Pilatus breakup and some older Bonanza incidents I've been reading about proper handling of an excursion into slow spirals in IMC. Of course the best solution is "don't go there" and that's one reason I have a backup Attitude Indicator (electric) as well as a backup vacuum pump, but...   If I were to realize that I'm in IMC banking, with the altimeter unwinding and the DG (or compass) turning the obvious first action is to simultaneously LEVEL THE WINGS and REDUCE POWER.