WAIT A MINUTE!!!

One purpose of the SP class is to cut down the cost of flying by not
requiring you to pay some doctor to sign a form -- not give an unqualified
person a way to thwart safety. If you have a condidtion that would prevent
you from passing a third class medical then you should NOT be flying.

The SP stuff explicitly says if you have a disqualifying medical condition
then you are to ground yourself. The rules do not say: "Except for......
yadda, yadda."