Sarah Isgur and David French of The Dispatch ran through basically all of the possibilities and basically came to the conclusion it could be anyone but most likely it was just a stupid young clerk that never had a real job (University to Law School to probably at least two clerkships before a SCOTUS clerkship) trying to play politics and not having a strategy, or at least a
good strategy for what they might accomplish here. Theoretically this benefits Republicans, conservatives and the religious right more by dropping this bomb early, but that’s just speculation about future possibilities and we’re talking about judicial clerks, not political operatives. Given that applies to mostly if not all of the clerks under any of the Justices, all you’re really doing is reading soggy tea leaves.
Sarah also pointed out that the Chief Justice has, technically, firing power over all of the clerks under any of the Justices, and there’s maybe a case to be made for him exercising that power here to fire all of them if they cannot definitively prove who it was after investigation in order to defend the integrity of the Court’s deliberation process. If they can at least narrow down that it was in fact a clerk and not some other staffer and definitely not a Justice (probably wasn’t, but still better to go through the investigation), then I can’t say I would disagree with that outcome.