1H was alerted and described as a transfer to spades. It's unclear what 1S was - other than forcing. The double of 1S was 'three card support' - either of spades if 1H was a transfer or hearts if it wasn't. I can't remember the rest of the auction from that point (I seem to have misplaced by notes), but it ended up with NS playing 2H-2 for -200 (2H was bid because NS weren't sure what was going on, but noone had bid hearts naturally). After the play, East admitted that 1H had be misexplained and that it was systemically natural. South says that with the correct information (that 1H was natural) she might have passed or she might have bid 1NT.
Details of the ruling I gave will be posted later in the thread. I was a playing director for Cambridge University (although in the B team rather than the A team where this ruling came from). The Suffolk captain decided against appealing this ruling despite being unhappy with it - but is appealing another ruling which I might post after the appeal has been heard.