no this is not true, there are quiet a few single managers up and down the country, in fact he would rather have singles as he is not paying a double wage, some of the pubs are only small and it would not be viable to pay for a couple.
there are lots of problems in the running of the brewery at the moment and we all know what and who it is down too.
As you will read from other comments i have posted i am not a fan of injustice, but lets fight the establishment on facts not fantasy, stick to the real problems, like overwork and ridiculous slashing of staff hours, all the employment laws that are being broken, then we might get some sympathy and support from the people out there who believe that the brewery is fantastic because of its pricing policy, educate those people on how he is managing to keep the beer prices down ( in real terms) and not squabble over petty fiction.