I've been watching the same year LXs for a while now. I've not seen one I want (white, no rust, well cared for, 50-75k miles) go for less than $45k until very recently. If you aren't as picky as I am, $40k seems possible now.
IMO, the general car market has been contracting for a few months now at wholesale. I don't think the retail prices have digested that fully yet, and I don't see the slide stopping any time soon. So, no harm in letting this play out a while longer. I'd bet another $5k falls out this year.
There is a balancing act though. Nobody is mothballing these as a collector car, so every year there are fewer nice cars left.