If it's done in early season, and you're on the Reid Glacier at first light, it's possible climb Sandy in a day. But you'd better bring lots of GU and Gatorade and really motor. I think it's a little safer cause lighter packs make for better climbing on the steep stuff. The other alternative is to camp at Illumination Saddle, leave your stuff there, and retrieve it with a detour going down the south side.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe