if its curving dont do icepicks on it
it will eventually crack because of the strain it has on it from it being bent
u can take a wrech and make it staright again and cut a peice of aluminum and put it in between the drop out
basically id say your screwed...curving it back will only weakin it more...iwould suggest using this vid http://www.youtube.com/watch?v=bbaK34efaaQ but since its already bent...deal with it till it breaks or get a new deck and reinforce it so it dont happen again