USA Today reported that the Supreme Court unanimously agreed to vacate the Florida Supreme Court decision and ask it to clarify its reasoning. Not true. The ruling was issued per curiam (in the name of the court), and does not break out how individual justices voted.
As for the ruling itself, this was a pretty clever way to deal with the situation — essentially a warning shot to the Florida Supreme Court to stop creating law rather than interpreting it, but at the same time trying to sidestep the issue of whether the Supreme Court should substitute it’s own judgment for that of a state court.