^
If your ebrake is loose like that, I would check for seized cables and calipers...
Yank the ebrake up, try to move the car. If it doesnt hold then It may be either the caliper or the ebrake mechanism itself.
When you climb under, unhook the cables from the calipers, and try to move them, if they are seized shut then you will need to replace them. Note that sometimes the calipers are seized as well, and the piston doesnt release.
To change the cables:
Unhook them from the calipers
Unbolt the brackets they are attached to(one on the body and one on the rear control arm)
Remove driveshaft
Unclip the cables from the brackets
Then wiggle them out from the crevices in the body
Then install new ones and reverse your procedure...
Took me about 2 hours with hand tools, working slowly on my back.
Hope this helps!