Is it SSPX taking a stand or Fr Robinson taking a stand?
Neither one of them is taking a stand.
He is suing for the exercise of a right which it is his duty to perform, win or lose.
He has no business asking permission.
PS to Ekim:
I have maintained consistency in this matter ever since Fr. Brucciani scandalously announced he had "no choice" but to cancel Masses after the edict by the British PM: The blatherings of the temporal authority are completely irrelevant in this matter. To pretend a compulsion, ask their permission, etc. is impertinent.