Durand's houses were built around 1950 on average, which puts this town on the older edge of the whole service area we cover out of Fenton. A lot of that means the track brackets, the hinges, and the rollers bolted to the jamb are the same pieces that went up when the house was framed. Nobody's pulled them off to inspect them because nothing forced anyone to.
Off-track doors on houses this age almost always trace back to one of two things: a track bracket that's worked loose from decades of wood shrinkage around the jamb, or a bottom roller that's finally worn enough to jump the rail on a cold morning. The door doesn't have to hit anything to come off track - it just has to flex wrong once the hardware's got play in it.
We see this pattern across the older pockets of the area, but Durand's average build year sits early enough that the odds of finding untouched original track hardware are higher here than in the newer subdivisions closer to Fenton. That's not a guess about your specific house - it's what the numbers for this town point to.