What did you come up with. I cannot remember a similar event, but perhaps back in FDR's administration?
I talked to an attorney friend who works for an appellate court. Neither of us had ever heard of anything remotely like this.
(We also agreed that it was a serious abuse of discretion but I probably should not say that too loudly here).
FDR’s intimidation of the courts actually worked. I don’t recall any court really fighting back against him - at least not in such a blatantly political manner.