Olderer's mono was a myth. When people have mono, they pull out of events (see Soderling. Olderer made AO semi, RG final and W final with "mono". Obviously an excuse, because despite being a media darling and seemingly gracious champion, Olderer is a sore loser.
Federer's a tactical genius. Clearly, he anticipated he was going to lose to Djokovic in Australia so he faked an illness right before the tournament. That way he could claim he had mono later on! Such cunning and foresight!
I imagine he orchestrated that 5 set match with Tipsarevic as well just to he could make himself look vulnerable and make the mono story look more convincing.
It takes a keen mind like yours to see through this guy. Well done