I think you've hit the nail on the head, he really does just look burnt out, which at 24 years of age is quite worrying.
I remember his first full season playing for Manly and he was the most determined, enthusiastic bloke I'd ever seen play first grade; he led the kick chases and always put his body on the line. There was one specific time when he'd just charged out of the line to smash an opponent and Peter Sterling said something along the lines of 'Foran will have to learn to adapt his game otherwise his body won't be able to cope with the continual punishment that he puts it through with his current style of play.' I can't help but feel like that may have been somewhat of a prophecy and we're seeing the results at the moment with his attitude and injuries