1. As long as temps aren't too frigid, I'd be inclined to move them back outside.

2. Now would be fine.

3. That's not unusual. Of the five varieties that I grow, only one routinely drops all of its leaves in the fall.

This post was edited by shazaam on Mon, Feb 25, 13 at 22:22

I'd pull them back out...

The cold-hardiness has not been lost unless they have started sprouting (new roots, or buds on canes). Roots are more of a concern that the rest of the plant for being exposed to below-freezing temperatures.

Spelling is "floricane".

Thanks. I actually looked up the spelling and then somehow spelled it wrong.
I'll pull them out tonight.

Same with strawberries? Do I cut off the leaves to give a new start?

All Blackberry plants in your zone will take care the leaves on there on they drop as some they start new growth.