I'm sure that having a heart attack after a contract is agreed to doesn't preclude that person from fullfilling their obligations unless they are incapacitated.
I don't think anyone can clarify the term disability. A friend of mine only has one leg, She can't get a "Blue Badge" due to the fact she has a prosthetic and can walk nearly normaly. Half the drivers in my local town with blue badges jump out of their cars and walk quickly across the road, not much wrong with their mobility.
Can I use the disability card as every so often my back goes into spasm and I can't walk for a day or so.
Was Eclipse Home Option 1 & VM 2Mb
Now O2 standard