I dare say there is an amount of brinkmanship from BA Management, but just 15% of pilots flying choice routes might enable BA to see out 72 days and then the firings would start. I wouldn't throw my job away without knowing the exact situation. I have heard of resignations from BALPA in recent days.
You gotta be kidding me right? 15% of pilots for 72 days? Not even in managements wildest wet dreams. Even if you blow all 15% on one days longhaul services there'll be nobody left to fly tomorrows. You think BA will hold out 72 days flying less than 5% of their daily departures? Also I don't know who told you about resignations from BALPA but you've got duff info there. The numbers are growing, not shrinking.