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If you do more than negating the flagging it's simple upvoting of everything @asshole flagged.

I might be able to upvote at a fraction of a % to be able to negate his votes. We shall see. :)

If you could tell me how to calculate that fraction, depending on your SP and VP and the flaggers SP, voteweight and VP that would be gold.

I have no idea how that is calculated.

But once @seraph has countered the flag, there isn't really much to do.

I view this as a chance for me to develop and share anti-@asshole defense measures.

This may be the first asshat to pull this sort of thing but will likely not be the last.