Welcome! 
I would go back to basics and treat your poodle like a puppy for a while. This is a great guide if you follow it carefully:
While there's no changing what's been done, dogs are resilient and thrive on routine and understanding what's expected of them.
You just need to do your part by letting go of ideas like "revenge soiling." Anxiety can manifest in inappropriate pottying. As can inadequate exercise and mental stimulation. Some dogs need activity to properly empty their bladder and bowels. Others confuse the soft texture of pads with other fabrics around the house. Or maybe he doesn't like going on pads that have already been soiled. There could be a number of things going on and it's not helpful to ascribe human motivations to dogs. It'll just make things worse for you both.
Are you working with a trainer? A rescue situation like this can challenge even experienced dog owners and could really benefit from someone savvy with positive reinforcement methods. I'd consider reaching out for some local help if you haven't already.
Please do also share a photo or two and tell us your little guy's name.
I would go back to basics and treat your poodle like a puppy for a while. This is a great guide if you follow it carefully:
While there's no changing what's been done, dogs are resilient and thrive on routine and understanding what's expected of them.
You just need to do your part by letting go of ideas like "revenge soiling." Anxiety can manifest in inappropriate pottying. As can inadequate exercise and mental stimulation. Some dogs need activity to properly empty their bladder and bowels. Others confuse the soft texture of pads with other fabrics around the house. Or maybe he doesn't like going on pads that have already been soiled. There could be a number of things going on and it's not helpful to ascribe human motivations to dogs. It'll just make things worse for you both.
Are you working with a trainer? A rescue situation like this can challenge even experienced dog owners and could really benefit from someone savvy with positive reinforcement methods. I'd consider reaching out for some local help if you haven't already.
Please do also share a photo or two and tell us your little guy's name.