I suppose we need to dredge up prior discussions here on this topic of IIMC and what works when you are silly enough to commit that Mortal Sin.
180 Turns sound nice in theory....but the last thing you need to do is throw in a bank and turn immediately after going IIMC....granted that and other gyrations will occur quite naturally all on their own and not due to anything the Pilot can do to prevent them due to the "Inadvertent" entry.
As there are as many variables as there are pilots and circumstances surrounding the IIMC Event....one hard fast rule shall not work in every instance.
One of the Tricks of Old Aged Offshore Pilots is a "Find the Surface" evolution that involves Minimum IMC Airspeed possible...into Wind....and a very slow ROD...into a known area clear of obstacles...until you see something usable to control the attitude of the aircraft.....and done only as the very last resort prior to running out of fuel.
Soft ditchings beats heck out of an autorotative descent on Instruments without knowing where the surface really is.
So....yes a slow descent might be the thing....if planned and well thought out....but never done on the spur of the moment out of immediate necessity.