If one of the clones developed enough individuality to change his mind and disagree with the others, I definitely don’t see how you could consider that one anything other than an individual.
Likewise, if all of the clones decided to change their minds and go their separate ways, that would be functionally the same as you-as-a-single-person-with-a-single-body changing your mind about something, and the general rule there is that humans are allowed to do that, without being interfered with. I don’t see any reason to change that rule.
Response to ETA:
If one of the clones developed enough individuality to change his mind and disagree with the others, I definitely don’t see how you could consider that one anything other than an individual.
Likewise, if all of the clones decided to change their minds and go their separate ways, that would be functionally the same as you-as-a-single-person-with-a-single-body changing your mind about something, and the general rule there is that humans are allowed to do that, without being interfered with. I don’t see any reason to change that rule.