I think the hostages were held for less than an hour. There is a UK press story where they are interviewed and describe their experience.
DORNER WAS HIDING IN THAT CABIN FOR 5 DAYS.. FROM THURSDAY FEB. 7TH TO TUESDAY FEB. 12TH.. Dorner was 'walked in on' by the couple on his last day at that cabin (Tues).
He was hiding 'right under the cops noses' 300 yrds. away from their command post, for five days until the owners of the cabin showed up (The Reynolds).