I'd like to tell you I dislike that sort of thing and hold it against him and am very grumpy about nationality of convenience...
... but if we plays well for England I'd probably stop caring.
In fairness, I have no idea how he feels about his heritage. I'm not going to blame a guy for preferring to play for the ABs than for England given the option, in fact you've got to wonder about the intelligence of anyone who'd pick otherwise (... paging outraged of Northampton). It's quite possible he still has a lot of pride in being partially English, just the ABs meant that bit more. It's quite possible he didn't care until he realised ABs weren't happening. Who knows. I like to give the benefit of the doubt to people. Not sure I'd be right this time, but I don't know the guy.
Not that I have any clue what type of player he is at the moment mind...