Last time I ran that section we got someone from the bakery to shuttle for us... but it was fairly expensive. It might be an option, but something you'd have to work out onsite which in your case would likely spoil the mood. I'd probably go with organizing via the shuttle company a head of time.
On another note, my favorite part of that river was from the border to Ford, least favorite was from Big creek down (not that it was bad by any means, but the upper section was just way more secluded... Have you thought of just reshuttling up to the border from big creek, then floating to Ford? A lot of shuttling I know but just a thought.
"If you dont do it this year, you will be one year older when you do"