Sean I am sorry to say, but I doubt that the pillbugs were the only problem. From everything I have read they only eat dead wood. I think your cuttings were attacked by something else and these were just feasting on the remains. Based on previous comments that you rooted in water, I think the rooting started rotting and the pillbugs ate that.
I would be happy to send you cuttings in the fall, though unfortunately I have none available right now.