If Pakistan are stubborn in their refusal to play when Hair is officiating, and the ICC are oblivious to the same, I could see a partition developing in international cricket--albeit mental. The Asian countries are likely to stand by Pakistan, given that Sri Lanka has been plagued by Hair before and India has had to deal with Bucknor despite vocal protests in private and in public against him.
With the World Cup coming up in less than a year, and the Champions trophy in less than two months, it'll be interesting to see how much the ICC can really screw up the situation.