I think I had them disabled already, but just for kicks I enabled one of the buttons on one card .. it destroyed the hashrate and now cgminer reports it as "sick" whatever that means
as an update, before i tried to push that blue button, i upgraded to 13.10 drivers and it got me about 5 more kh so I was at 525kh for each card... now i'm wrestling to get all 4 working again ... don't push that button!
Since the button just enables a second BIOS, Id try powering the whole machine off completely, then disable the buttons and power it back on. That should put you right back to where you were.