You are playing with a client who is generally considered not very good, but you have recently won a number of major events with him.
LHO opens 1C which is either natural or 14+ balanced without 4 diamonds or a 5CM (so a 2 card suit if exactly 4432).
Partner doubles.
RHO passes.
You pass(1)
LHO redoubles (SOS)
Partner passes.
RHO (me) bids 2H. RHO could have bid 2H 4-8 HCP 6-card heart suit the previous round, or 1H natural & forcing, but didn't.
Your go.
Pass is not forcing.
(1) I don't agree with this, but you are one of the best matchpoint players in England, so maybe I'm wrong!