I appreciate everyone's help. I just got back from my trip and ended up coming down Yosemite Falls trail to Camp 4 and then catching a ride back to the car. While I hate backtracking and my knees hate steep down hills, taking the Yosemite Falls Trail seemed the best way to ensure a ride to the car.
As background, we started at Tunnel View (Wawona Tunnel) and hiked the Phono Trail to the top of the South Rim, where we hit Crocker Point, Taft Point, Glacier Point, and then on to the junction of the Clark Fork with the Illilouette River for a Day 1 total of about 20 miles. Day 2 ended on the North side of Red Peak at one of the lakes for about a 16 mile day. Day 3 was down the Merced River, passed Merced Lake Camp, to a point about a mile down the JMT on the way to the junction of the trail to Half Dome/Clouds Rest for about 20 miles. Day 4 was up over Clouds Rest to Tenaya Lake, where we caught a ride to the North Dome trail head and hiked on to around Lehamite Creek for about 19 miles. Day 5 was along the North Rim Trail to El Cap and then back down the North Rim trail to the Yosemite Falls Trail to Camp 4, where we immediately got a ride to our car.
Given how badly my knees felt after the Yosemite Falls Trail, I was wishing we'd stuck without our initial route out, which started this tread.