I *think* you can reform your finial. If you haven't already over-baked and you don't over-bake the next time. Just keep an eye on the clay piece and when it's soft and pliable again, put it in the position you want. I would turn off the heat at that point, but maybe a few more minutes of cooking time would be good. The main thing, as I said, is be careful not to overdo it. Sculpey tends to burn more quickly than some of the other poly clay formulations.
Oftentimes, when I take a piece out of the oven, I'll manipulate it a bit to get it where I want it, then dip in a bath of ice water or hold it under the tap if the water is plenty cold. Then it stays put. :-)
Remember, though, that Sculpey can also be more brittle and break more easily so be careful!
Hope that helps. Sorry, I don't get over to this forum much lately!
:-)