As far as I know the MH-60S cannot carry or deploy sonabouys because they went back to the Army fuselage to up its internal carrying capability. They could carry a torpedo but couldn't arm it or program it, so basically worthless for ASW.
With regards to the deployment of the Yak-38, yes the intelligence community promptly broke out their doom and gloom briefs and proclaimed the end of _______________. After observing their actual operations, they became merely a source of amusement to actual operators. Brave pilots though.