I can understand the frustration & annoyance you are feeling... big money is paid over to "so called experts"... but assuming it's not the wood itself, would you think you have leaks underground? pin hole in a pipe as an example? Is the floor expanding in specific areas?
I wouldn't be into taking out full length boards - assume your floor is glued together? I would cut back where it is flush up against the wall (might be everywhere if there wasn't any gap left around originally when fitted), leave it settle for up to a week (floor should go down within a few hours after cutting back around the edge), then check the floor edges again - see if it's gone / moved flush again, against the wall...
I had to do this a few times in the space of a few months... originally got the floor guys back in to "fix it" - caused more issues that they solved, had it out with their "boss". Got another guy in to go over it again... next couple of times, just did it myself... this was going on for about 8 months... but it's settled now (3 years later), no issues since.. any "extra" gaps that were seen after skirting was put back on needed to be filled in with wood filler. Thankfully not too much was needed.
Good luck with it...