Roller furling jibs that unwrapped were the primary reason that Marina de La Paz broke apart in Hurricane Marty in 2003. As the sails filled, the boats pulled the docks apart. See the photo below of the result.

Don't risk your boat or the boats around you -- take them down, don't just wrap them.

Lots of resources for hurricane prep:

Commuter Cruiser by Jan Irons: Dock Lines for a Hurricane -- http://commutercruiser.com/10-tips-for-revisiting-dock-lines-for-hurricane/

Commuter Cruiser: Taking Down a Roller Furling Jib: http://commutercruiser.com/removing-a-roller-furled-jib/

The Boat Galley (my site) has a number of articles on hurricane prep, including checklists and storm anchoring:

Hurricane Warning -- Riding Out a Big Blow at Anchor (much of the info applies even if you're not at anchor or a mooring): http://theboatgalley.com/hurricane-warning-riding-big-blow-anchor-blue-water-sailing-september-2005/

Staying Put -- Ground Tackle for a Hurricane (real-world results for anchors and mooring systems from Marty)-- http://theboatgalley.com/staying-put-ground-tackle-hurricane-cruising-world-june-2005/

Stay safe!!