Why won't the washer door open immediately after the cycle ends or when paused?

The door will not open for 1 to 2 minutes after Pause is selected or at the end of the wash cycle, as the electric locking mechanism needs time to release. Once started, the door cannot be opened for safety reasons. If the wash cycle is paused and no action is taken, the power will turn off automatically after 4 minutes. (Page 19)