Paul,
You asked about the burlap sack and I may have an answer, or at least a suggestion.
We know that the peacekeepers sent Tempus to Pre-Historic South Dakota but that they also supplied him with basic necessities.
Now, all the basic food stuff could have been left in burlap sacks just so Tempus won't have any chance of using any kind of buckle or zipper or anything to construct a new time machine.
Avia (starting to count-down the minutes till CC posts)
