Michael Teys has indeed gone back into strata management and i have no idea if he is still practising as a lawyer in terms of litigation.
Having ruled out two of my preferred choices already, I would say David Le Page if you want a fighter and Stephen Goddard if you want a negotiator. Also consider Christopher Kerin who is an expert on building defects. He used to work with Michael Teys but has set up a new practice, KERIN BENSON, with experienced strata litigator Allison Benson.