0:55 To the left of your potential crack at the edge of the area which you sanded there is another section which has the same distortion in the grain. It looks to me that both were the way the grain grew in the tree. Not a crack. Nothing to be concerned with.
1:39 Notice the same vertical ripples near the brace cross wire. Looks like it was caused during the milling of the spar stock. A big nothing burger.
1:15 The second rib cap is separated from the fabric, as you can see light between it and the fabric. That rib cap also appears to be straight rather than curved, why? Was the rib stitching too tight pulling the cap? Did someone push against it at some point in time breaking it? Can you reach in there and wiggle it? Is it cracked or broken away at either joint on each end of that piece? I still do not see what has moved to have caused that ripple in the finished fabric. That would not occur during the installation process of the fabric as the fabric would have shrunk flat without the ripple.
I see nothing in your video which would require a major opening up of the wing. Perhaps cutting some fabric near that second rib and possibly the third rib to check the condition of those rib caps?
Where you are pushing the leading edge aluminum against the spar, I see nothing broken. Just poor workmanship in building it in the first place. Since the fabric is not cracked along the edge of that aluminum leading edge, that flexibility isn't creating an issue. Not the best, but not enough to ground the plane.