Canadian been non-resident and went through the same two years ago. One can cash 100% RRSP for:
1. if onc going to use that money for own medical expenses.
2. if one going to use that money for own child (disabled)
3. if one going to use that money for own child education.
4. if one going to use that money for first time home purchase.
5. 100% of RRSP will be used to clear any outstanding bills after owner's death.
6. Statistics canada will be able to use any amonth of that money after owner's death.
Sorry that the above will not help you but at least you can make an informed decision. Any other case you have to pay the Capital Gain of 25%.
I will add more if I remember anyother one.
Bustie