"Kicking and screaming" might be a bit over the top (and this wording isn't in the original articles either). Your average bully is more likely to react scorning and sneering, and BREIN is certainly no exception here.
It's more truthful to state that the Pirate Party hopes to have found some wiggling room in the Dutch laws to hold against BREIN at this point, which at best would force BREIN to start a completely new court case to get what they want, instead of relying on the ruling of the previous case for all their current bullying. But the Pirate Party may very well end up losing this one and leaving with the costs of going to court plus the original injunction, which would be really bad for this grassroots organisation.
So in short I don't think BREIN is all that impressed.