From what I understand; a lot of Bolton's Asians are of Bangladeshi or Indian origin, (though this could be bollocks) so might be different flags flying.
It's the world cup next year, perhaps we'll be able to judget better then.
Anyway, I agree with what you said, if a right wing skin head chanting shit wants to wear the English flag then there's not much I can do, other than refuse to let his ilk take it away from me.