Sounds like total case of insecurity! He was still learning his place and then a big change. I have had destructive traits show up in a couple rescue dogs. My vet explained it as this...Until they feel at peace, they will show many different sorts of bad behavior. Surprisingly, the more comfortable they feel, often the behavior will become worse. They actually regress and then slowly advance from puppyhood to where they are in actual age. A full grown dog can and often does revert to al the bad puppy traits. peeing,chewing,everything. We just kept up the reassurance and consistency. It was so interesting, once we knew what to look for. We could actually watch them move through stages of their lives that we weren't around for. I think I would just correct over and over. Loving him and lettting the good come through. You of all people can handle it. Not fun...but I looked on it as a healing process. From the soul outward.
Now..I have no explanation as to why Jake loves to destroy so much!!