Support and watching the game live is not mutually inclusive (unless you think he can magically will on his team through thought alone, maybe him watching games live is jinxing us and we should be encouraging him to watch movies for the rest of the season!!!!).
Every so often you do get pros that openly say that don't watch their team play when they are not available through injury or non-selection. It sounds terrible to fans but they just need to turn up when required and give 100% (some even aren't the best trainers, [cough] Ifill [/cough], but are good enough to get away with it).
I would be far more scathing if he was not training hard, being uncooperative at training, drinking excessively during the season (generally not taking care of his body), undertaking in illegal activities etc. This is really on the low end. Not sure what sort of analysis the 'Nix do, but by now could have watched the game more than just about all the fans.
To be fair, I wooldnt expect him to come out on radio and blatantly say he won't be watching the game. I think that'd be worse and more unprofessional. But the fact he had to lie tells you that he knows people wouldn't find it wrong if he didn't watch the game.
It's not something that is really worth going on about, it's just quite disappointing. But hope he goes well in Portugal.