Very similar incident happened with Transaero B737 in April 2010 in Krasnoyarsk. Going around - pitch up to 45 degrees - speed dropping almost to 0 - banking 80 degrees right - rapid descent/fall from 4000 ft and stabilized at 400 ft after getting visual reference.
However, though this incident was discussed on public forums and most of B737 Russian pilots know about this incident, it has never been officially investigated and no official info ever appeared.