[img]http://d.yimg.com/a/p/ap/20100614/capt.96577557b23342cba476c7a8623bc7b4-96577557b23342cba476c7a8623bc7b4-0.jpg?x=130&y=58&q=85&sig=w23z9FsAuw_F1bGgf3mmSg--[/img]AP - BP made a series of money-saving shortcuts and blunders that dramatically increased the danger of a destructive oil spill in a well that an engineer ominously described as a "nightmare" just six days before the blowout, according to documents released Monday that provide new insight into the causes of the disaster.