1. Bar pursuant to written waiver. A disclaimer is barred by a written waiver of the right to disclaim.
2. Bar pursuant to events. A disclaimer of an interest in property is barred if any of the following events occur before the disclaimer becomes effective:
A. The disclaimant accepts the interest sought to be disclaimed;
B. The disclaimant voluntarily assigns, conveys, encumbers, pledges or transfers the interest sought to be disclaimed or contracts to do so; or
C. A judicial sale of the interest sought to be disclaimed occurs.
3. Previous exercise not a bar to disclaimer of power held in fiduciary capacity. A disclaimer, in whole or part, of the future exercise of a power held in a fiduciary capacity is not barred by its previous exercise.
4. Previous exercise not a bar to disclaimer of power not held in fiduciary capacity; exception. A disclaimer, in whole or part, of the future exercise of a power not held in a fiduciary capacity is not barred by its previous exercise unless the power is exercisable in favor of the disclaimant.
5. Bar pursuant to law. A disclaimer is barred or limited if so provided by law other than this Part.
6. Effect of bar. A disclaimer of a power over property that is barred by this section is ineffective. A disclaimer of an interest in property that is barred by this section takes effect as a transfer of the interest disclaimed to the persons who would have taken the interest under this Part had the disclaimer not been barred.