To shuffle off this mortal coil means to die, and in this context the person is too healthy to die without help.
Context: This one was too healthy to die in the middle of the night, he might need a bit of help to kick the bucket.
Hypothesis: This one was too healthy to pop his clogs in the middle of the night, he might need a bit of help to shuffle off this mortal coil.

Is the hypothesis incorrect? (Yes, no, or unknown)?