A SPOT transmits ever 5-10 minutes depending on how the owner sets it up. Even after a crash the spot should keep broadcasting its position. So yes, if moving it can be some distance from its last report, but then the next number of reports will be where the glider is. But someone needs to monitor the spot track or the pilot needs to be registered on the ssa web for spot tracking. Even then, no one may look at it until he is over due coming back. Spot and Delorme can have faster refresh rates.
BillT