I don't thinks so.

You might have to destroy it like a horcrux. MAybe it's harder or you can't destroy it at all.

Yes there is. The fact that Albus Dumbledore and Gellert Grindelwald have a spectacular duel and the Elder wand changes allegiance tells us that eventually the Blood Pact they made was no longer in effect/had been destroyed or effectively disabled.

The method is not yet revealed.. we have to wait for the next installments for answers

I heard a theory somewhere that a blood pact can be broken with dragon's blood being it one of the twelve uses of dragon blood which Dumbledore discovers.