In reply to SomeClimbingGuy:
Temption is to head to the Slig to celebrate, and hope you get lucky with a lift and suffer the walk back if not.
Other alternatives depend on where you have started from, if you have any spring left in your legs and day light remaining.
If Glen Brittle back track to Sgurr Fionn Choire (passing under rather than over Am Bastier), descend the corrie to pick up the path, then road to Glen Brittle.
If Coruisk either Slig for celebration and then back through the Glen, or from SNG follow the ridge S to just before Uamha and then descend into Glen Slig. it's also possible to get into Lota (easiest from underneath the B. Tooth) and then Harta Corries from a couple of points, and then back to Coruisk via Coire Riabhach. You will need good light to find the way, and for the scramble down into Harta next to the waterfall, these corries are ill frequented, so there are few traces to guide you. So if knackered, or its getting dark best take the Glen Slig route.
Alternatively you can do Jamie's option of leaving a car or alternatively a second tent and sleeping bags at Slig.
Post edited at 14:20