In another end of the world
We get "delamination" at the roots of the blades on our Blackhawks fairly frequently (right at the very inside of the blade, where the root meets the blade for the first time) -- the prop and rotor guys put a bit of pro-seal and spray-paint on it and call it fixed until it shows up again. It looks like a crack, but is only a split of the sealing compound (so they say).
Granted, the R22 blade may be vastly different in construction, or there may be some uneducated prop-and-rotor guys in the military, but had I seen a crack like that on an R22 I was pre-flighting, I wouldn't fly... not to say I wouldn't trust a qualified mechanic to say it was good to go.
Heres to safe flying
-Mike