I've been holding Matterson for 17 weeks now, so it hasn't crossed my mind to trade out Milf.
There is a big unless. If he's dropped and playing reserve grade I will definitely hold him and assume he's back in the team in a week or two (though I'd not see that above article, which is unnerving) and Averillos it up on his return to the NRL. I would very much assume that this is merely a ploy to get him to wake up to himself and that he won't be out long (before reading the above).
The only UNLESS part of the equation would be if he ends up being named on the bench, which was mentioned as a possibility in the article on NRL.com too. If he's out completely and keeps his sexy BE there's no way I could trade him, but if he comes on for 10mins ala Croft last week, I'll have no option but to punt him. And, it will aggravate me.