+1
i'm not dom Fi, so maybe i don't understand this as well or the process is a little different for me, but i think you have the pattern right - however the reasoning is a little different, at least for me personally.
it would be more like strong (healthy or unhealthy) Fi is very aware of its difference from others and its need to stand its own ground, but unhealthy Fi misinterprets that into inability to ever reconcile the self with other selves. the primary motive for going against the group isn't for the sake of being a rebel because it makes you feel good as much as it is due feeling hurt then protectively walling off of your own identity and internally cutting yourself off from others, creating the illusion that it is "you vs them". then rebelling feels good because it reinforces your self-protection, which actually just serves to perpetuate the misperception that you can heal yourself by walling your self off - even though all you're doing from an external perspective is being a whiner with your head up your ass.
my point being, i think the origin of it is less in being proud of not considering others (i think that actually goes against the whole point of Fi - at least for an ExFP, Fi is the primary means by which we connect with others... not to mention that being wholly self-absorbed is embarrassing) and more in a painful feeling of irreconcilability. i think that's pretty universally true, actually. harmful behavior is usually the result of someone being hurt inside, and that causing some sort of cognitive error which skews behavior.
here's my messed-up-Fi process, for your enjoyment:
1) i'll get internally emo and whiny and try to hide away because that's embarrassing
2) but i know that what i actually need to heal is to reconcile my ability of my self to reconnect with others, so either i'lll just ask someone to talk to me (if i'm in a particularly healthy state of mind), or if not, i'll try to lure others to pay attention to me (because i feel like they should care enough about me to pay attention that i'm hurt)
3) if i don't ask anyone and no one does pay attention i will mope alone and just ruminate in my thoughts
4) either i will get sick of ruminating and want to go get something else done, which is what usually happens, so i give up being a huge whiner and go be productive, OR i'll finally give in and ask someone if they'd mind talking with me for a while while i debrief my feelings to myself, OR i am increasingly an ass until someone notices.