Has a sitting Justice ever been removed from the bench?
If the leak is tied to a SCOTUS staffer, there could be several administrative layers between them and a Justice. Heads will roll, but it's unlikely a particular Justice will suffer any ill PR due to the separation. Unless, of course, someone could prove collusion.
If it's an intern, that's Justice-specific. I would expect any Justice in that situation to immediately and proactively lower the proverbial boom, and in the harshest way possible. Even if the Justice isn't actively complicit, not taking action implicates them in the scandal. It also evidences a lack of respect for SCOTUS sanctity and objective jurisprudence, an unfathomable attitude for a sitting Justice.
Brad