It starts at line 31 on page 2:
(1.2) A plan ceases to be a specified disability savings plan at the earliest of the following times:
(a) the time that the specified Minister receives a notification, in a manner and format acceptable to the specified Minister, from the issuer of the plan that the holder elects that the plan is to cease to be a specified disability savings plan;
So the individual can make an election to reverse the treatment of their plan.