My wife has developed bad sciatica over the past 6-8 months and has had 3 steroid injections during that time. After walking several marathons over the past 3-4 years with Team in Training, the inactivity now is killing her. They are now talking surgery (bulging disc, not THAT bad a surgery) but will give her one more shot next week so hopefully she won't have as much pain while in FP. But, like your husband, she's going REGARDLESS (although we did buy cancellation insurance) I just may end up taking the 4x4 excursions on Moorea and BB by myself.
Steve