"If the shuttle doesn't work out, I'll probably just drive strait to Stewart TH and hike a there-and-back with a jaunt up Little Annapurna."
If you don't mind the extra 1000' or so of elevation gain and have a bike, hide it in the woods near the Stuart Lake TH and then drive back down to the Snow Lake TH to do the traverse. It's an easy ride back down to the car. It wouldn't work so well in reverse, because it's much harder to hide a bike near the Snow Lake TH. Bonus points awarded for the extra 1000', and for descending Aasgard Pass, BTW. ;0)