I got coccydynia years ago when my ex-husband drop me hard on the ground during a piggy back ride.
I specifically remember getting up from a sitting position was the most excruciating pain. Unfortunately what fixed it for me was having a baby! It still hurts sometimes, but nothing like it used to. The baby is 26 now! Six years ago I fell on the ice HARD and really messed up my sacrum, so now I am dealing with the nightmare of my whole body out of balance and constant muscle spasms for 5 years. I thought it was from my neck, but I am now coming to realize that fall on the ice caused a whole lot of skeletal issues.
Did your husband fall at all?