Sorry about Gustav but it sounds like your home is fine.
Yellow and slimy sounds like too much water. Jades do have a small root ball. If the roots are mushy then it is rotting. Roots should be firm and white.
Jades do like to be ignored and can go without water for quite a while. They store water in leaves. I have a small one in an 8inch pot and water it maybe once a month.
What is the size of it and how big is the pot? Can you post of pic?
The link below may help as well as searching this forum and the cacti forum for jade plant.

Here is a link that might be useful: jade faq

If the root ball was dry though you had recently watered it, it sure sounds like the potting medium isn't getting saturated with each watering. Though these plants don't need to be watered very often, they DO need to be completely and thoroughly soaked on watering day. If not, roots can die causing the plant to wilt.

When was the last time you completely re-potted this plant (before this incident) into fresh mix, maybe doing a bit or root pruning while you were at it?

My jade plants get watered (and soaked) in the sink on their watering day. They remain in the sink for a couple of house before I let the drain and put them back in their favorite locations. How often this occurs depends entirely on the plant, not the calender. They are different sizes and in various kinds of containers.