Place a tent over the side of the house you are working on (Old Vinyl Billboards work great for this, or heavy mil clear plastic), to keep the weather out, while you are removing all vinyl siding off that side, then remove the OSB.
Once you get the OSB all off, you can then pull out the batts and inspect the drywall and wood framing. From there you can assess what to do with any structure that may be jeopardized.
Make sure you are taking plenty of pictures, and you may want to discuss with your Home Owner's Insurance to see if they will cover the cost for repairs, due to the original construction company built a house with a ten year expiration on it.
Now you can see why so many people complain about cheap construction, and tend to go with older homes that were built by trades that knew what they were doing, and those who owned them, maintained them over time.
Going back to the fixing the walls, you will be able to airseal around any outlets with foam or caulk, apply the soundproofing putty sheets on the back of the outlets to also help keep down the noise.
Also pull any ethernet & coax while you have those walls open, for places that you wanted to place those jacks at, but never could get it done.
By the time you get done, that house will stand for another twenty years, if you do it right for the repairs that need to be done.
__________________ Ren: Now listen, Cadet. I've got a job for you. See this button? Ren: Don't touch it! It's the History Eraser button, you fool! Stimpy: So what'll happen? Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?