My 2 cents as an Anderson owner - I think it's a smart move to trade him. His value was always temporary, with the hope he'd make an easy $100k, score well until Touk Miller came back, and be handy over the byes given he has the favourable bye with just Geelong also off.
The problem is, he is now in a position where he'll start losing money (that 200 BE is scary!), and his scoring has been poor the last few weeks, meaning the only benefit that remains is the bye one. Not useless, but I just think the scoring and cash risk mean the ~$100k you can make taking him down to someone like Steele is worth it.
I'd only hold if you think he can get his scoring back on track and you think Touk is going to miss for a while. If neither of those things, free up the cash and cut the losses I reckon.