OK. Two days at the shop and a water test later, the only way they could find that water could be entering is through the opening where the parking brake cable enters the cabin. Evidently there is a grommet in that hole. Mine was popped out for some reason. Odd, considering I rarely need to use my parking brake. Sure seems like a LOT of water though to come through such a small opening in a relatively short amount of time. I'm thinking that the A/C conedensation was making its way in? I'm keeping my eye on it, that's for sure. I won't be stowing anything of value in my 'stow-n-go' containers anymore.
As for the VES headsets, no questions asked. Even though my Journey is over 36,000 mi, they didn't even blink when replacing both headsets for free. They even kicked in the remote - which I don't need - yet.