Update--
DH just got off the phone with HR. Apparently they will be offering him a choice of either a one-time severance package(we don't know the details of that, but he estimates it would be 2yrs salary in cash--a big chunk of change) or long-term disability, full life insurance & health benefits, with the option of full retirement with full pension at age 55 (he's 50 now). the only caveat is that if he goes into remission at some point, he will lose the LTD and will not have any severance.
If by a miracle he recovers in the next few years, he will still be an over-50yo man with a hot health history and no recent work experience. It's a chance I think we should take. I'm thinking LTD is the way to go. It would cover 70% of his current pay and allow him to keep his life insurance, a $250,000 policy. It would beat SSDI by a mile any way you slice it. Plus he would continue to accrue years toward his pension. Potentially, if he chooses not to retire until age 65, we could be talking about 15yrs of LTD (assuming he lives that long

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