You are geting stretching from excessive light distance. Retrain the seedling by moving a CFL very close (but not as to burn) to the seedling on the opposite side that it is leaning toward. This will cause a little more stretching, but will get the plant pointed upright again. This happens fairly commonly in the CFL Hydro germ setup I invented. It is no problem though because in my setup, the CFLs actually rotate around the sides of the tank, which emmulates a solar cycle. After it is mostly upright, watch for any more light stretching and correct accordingly (on all the seedlings). You may also want to (lightly) pack a little dirt around the base of your seedling(s) affected by this once it goes verticle again to eliminate some of the above ground stem stress and add some support... Good luck.