About half the staff at the Murdoch papers seem to be under arrest for dishonesty of one sort or another, so why accept THEIR account of what happened? The Sun, for example, printed details of what a Tory MP had to say on the Miliband matter using the words, "pulled a sickie". He being an MP, too, we should not believe HIM either, eh?
It seems Milliband felt ill on the evening before and contacted the organisers to tell them he suspected he would be unable to attend the NHS rally. The rally was cancelled, though there is no reason to believe that was because of the Labour leader's sickness. Accordingly, when he actually felt better next day, he fulfilled another previously arranged obligation, namely, to go to the football match. And why not?
Now, that may well be lies...we don't know...but why believe one member of what you believe to be a lying group rather than another?