"Defendant, Psystar Corporation, has destroyed relevant evidence that it was legally required to preserve. Specifically, Psystar has overwritten -- i.e., erased -- infringing versions of the software code used on computers sold to its customers," the letter reads. Apple says that Psystar has erased prior versions of its software. This discovery was made when the company deposed Rodolfo Pedraza, CEO of Psystar, in order to discover how the company was circumventing the "technological protection measures".
The destruction of evidence that has been sought by an opposing party in a legal dispute - called "spoliation" - is held in very low regards by the courts. If its true, then things will become a lot harder for Psystar.