Cool story.
If I had to put money on which group definitely wouldn't go down without a fight between Albertan separatists and FNs in Alberta, none of it would be on angry Wild rose types, and may ultimately turn out totally different then they think if it came down to some kind of civil war... maybe even a completely sovereign FN country where the previous provinces were.
If a province ever separates, it should really come down to what the individual bands want to do. I very much doubt any would passively go along with the arbitrary provincial lines and total loss of all previous land acknowledgement, rights and everything else they've gotten.