I'm not a lawyer.....

.....in fact I don't even play one on TV so I don't have a clue as to WTF this means:

Justices, 6-3, Sidestep Ruling on Padilla Case

Fortunately Lyle Denniston over at the SCOTUSBlog does and he says it's a partial victory for the administration.

The victory for the government was not an unqualified one, however. The Court implied that Padilla has a legitimate concern that the government -- which repeatedly changed its handling of his status -- may again return him to military custody; it said that his case raised major issues -- including the role of the courts in dealing with presidential power, and it told all courts to stand ready to react quickly if the government again shifted Padilla's status or custody, in order to protect the writ of habeas corpus.. It even indicated that he would have a right to pursue a new appeal solely in the Supreme Court if his status were to change again. None of those comments would seem to be welcome to the Administration.