Can you tell me the outcome that will happen then if you know everything?
I don't know everything, so couldn't say for sure, but I'll take it slowly for those who don't know the basics.
Like most fans, I know the FA could threaten them with a points deduction. Historically, I can't find any examples of a club being deducted points for a pitch invasion, except for Brighton, which was their second offence after a suspended deduction. The fact this game was actually abandoned, and the fact it's the last game of the season (complicating the ability to reschedule) may impact on the FA's decision. Again, I don't have any specialist knowledge here - this is just my basic knowledge.
I don't frequent Blackpool forums (thank god), so I can't say for definite, but I would imagine there's been some robust debate about the rights and wrongs of protesting this way, and the possible punishments it could incur. Clearly a sizeable group of fans (including those who didn't invade, but stayed and applauded the ones who did) are aware of the risks, but believe their cause is ultimately more important. Personally I think that's commendable. Of course, I accept there are those who prioritise stability/maintaining business as usual above all other concerns. Clearly there are plenty on here who fit into that camp - good luck to them all.