I still maintain that detonate is used metaphorically, to show a burst of controversy and the division of starfleet in different factions based on their views for whatever idea it is Cumberbatch represents.
Then why don't they just say "blah blah divided the fleet blah blah"? Detonated is so tied with explosions in the English language that any other use of the word is odd.
Actually it is the odd
use of "detonated" that makes people think it might not mean what it usually does. How exactly do you detonate a fleet, not to mention what its stands for? It probably doesn't mean every last ship blows up (though I wouldn't rule it out!). The "Starfleet" reference probably means more the organisation
(or is such "subtlety" just wishful thinking?). Further, "divide" doesn't necessarily imply a violent event.
"Force of terror"
... an unstoppable force of terror from within their own organization has detonated the fleet ...
rather than purely missiles etc?