I wonder if the Russian and German naval mutineers said they would defend their coutnries.
I doubt it was this minor:
Spithead
The mutineers maintained regular naval routine and discipline aboard their ships (mostly with their regular officers), allowed some ships to leave for convoy escort duty or patrols, and promised to suspend the mutiny and go to sea immediately if French ships were spotted heading for English shores.
It was a mutiny expressly and only for:
1) Better pay to reflect inflation.
2) Better conditions to reflect the increase of voyage duration due to coppered bottoms (specifically, the abolition of the Purser's Pound where 1/8 of any pound of meat was kept by the ship's purser)
3) The dismissal of a handful of particularly badly disliked officers.
They didn't even take issue with impressment - or flogging.
They essentially got their demands, complete with a pardon for the mutiny.
The Nore mutiny was a little different, being a bit more violent and having wider demands, and that one unravelled completely because even people in the middle of the mutiny felt it went too far.
...so you'd need both mutinies to be worse than the Nore, not the Spithead,
and for the Admiralty to handle it horribly,
and probably a couple of other things too...