In every school in which I instructed, we taught the students to deal with UAs. In day VFR, turn it into a wingover, or rotorover, by rolling to whichever side is favoured, keep gentle back pressure in until the nose is almost back to the horizon, then roll wings level - but on a different heading. Once it is all stable, turn back to where you want to go.
In IMC (in an IFR aircraft) in a teetering head machine, if the wings are nearly level but nose is high, gently lower the nose while applying a small amount of collective to load the disc. If the wings are not level, or airspeed is rapidly dropping, use same as day VFR, a gentle turn with back pressure, let the nose come down, roll level.