Courts are too chicken to even try to enforce their rulings. It’s not the first time for Obama to ignore them.
Any ruling that board now makes is null and void.
The ruling is only the first step. The appellate court can, upon motion, issue a writ of prohibition directed to the NLRB, which would render illegal all of their actions, violation of which would lead potentially to criminal contempt and jail.
You are going to see a flood of litigation now.
If I were a litigant at the NLRB, I might also start filing disbarment petitions with the appropriate bar disciplinary boards against any government lawyers complicit in intentionally violating a valid court ruling.