> For the foregoing reasons, we hold that district courts must apply the traditional four factors articulated in Winter when considering the Board’s requests for a preliminary injunction under §10(j). We therefore vacate the judgment of the Court of Appeals and remand the case for further proceedings consistent with this opinion.

Correct me if I’m wrong, but it sounds like this is just about a temporary injunction to give the employees their jobs back while the actual labor case gets decided? The lower court used the two part McKinney test to grant the injunction, and the Supreme Court said no, you have to use the four part Winter test like other district courts, go back and decide again.