That court step exists because ISC's Torrens system treats a registered transfer as conclusive on its face, normally a strength that guarantees certainty of title, but it becomes a hurdle once a fraudulent registration has actually gone through rather than being caught beforehand.
Title insurance, where a policy is in place, can cover the legal cost of that court application and any resulting loss, one of the few times a Saskatchewan owner will be glad they bought a policy that otherwise sits unused for the life of the mortgage.
Expect legal fees well above the usual $800 to $1,500 closing range once a court application is involved, and expect your lawyer to move as fast as the court process allows rather than as fast as you would like. Get your hand-reviewed valuation from Joel Dyck.