Were you in partial IMC with no visible horizon at the time you had the jitters (PIO)? As a sim instructor we see PIO very often in the 737 if the instructor sets (say) 3 kms viz and nothing else.
As the approach lights come into sight the PIO sets in with a vengeance and occasionally one sees angles of bank of +/- 45 degrees and even the occasional loss of control. All because on first becoming visual with the HIALS there is no visible horizon at 3 kms viz.
As one reply said, momentarily relax your vice like grip on the stick and the PIO should reduce but it will immediately come back if you start to over control again. Get your sim instructor to let you fly four or five ILS in 3 kms with no wind and start from about five mile final. Eventually the spooking causing the by PIO will stop.