I'm simply going by the fact that it doesn't seem to mentioned anywhere that they haven't been paid. The Charlton forums I looked at haven't mentioned it and generally you'd expect to see it there. It's not like that kind of thing stays secret for very long, and with all of the grief he's getting, it would be reasonable to assume that if he wasn't being paid, that he'd say so to defend himself. All he's said is that the decision has been a really difficult one for him to make but that his fear of injury is such that he doesn't want to play, and that he knows he'll be seen by some as being greedy. It's also perhaps worth pointing out that he was missing for two months earlier in the season after being injured playing for Montserrat and I assume he still received his Charlton wages then as well. All in all, he'll have played about 4 months for Charlton this season but been paid for all 12 months, unless they refuse to pay him this month, which they should.
Apart from some unfounded speculation on here I have seen nothing to suggest he hasn’t been paid. Do you know that he hasn’t been paid? If he hasn’t, then I’m surprised he hasn’t just said so, instead of saying he can understand if people think he is a money grabbing player with no loyalty, but hopes that people will forgive him for only thinking about himself.
There is nothing to suggest he hasn’t been happy taking his pay during the last few months without lifting a finger and now he can only think about himself.