Unusual Stormie movement

We all know the chances of a ringed storm petrel being retrapped is very high and on the 5th July 2009 two of our stormies were retrapped in Tullagh Point, Donegal, Ireland.  Thats no surprise as we have now had a few recoveries of our stormies in Ireland, however these two birds were trapped together at Whitburn on the 2nd August 2008 and were retrapped TOGETHER.  I am not sure of many other records of birds being trapped and then retrapped together (apart from local breeding birds, such as yellowhammers).  Below is a map of where the birds moved to, although unlikely to have crossed over England.