Sorry I wasn't available earlier to help you with this, Steve. Sometime ago, I noticed that arrow, and I hovered on it to see the html title. Really, it collapse the header? I wondered what earthly good collapsing the header would do, but I guess on a Simple Machine forum with a lot of junk in the header, maybe it is of some help. Still, you'd think hiding the "Recent" posts link would never be a good idea. Ah technology. You can still do the stupidest things imaginal without it, but you just can't them as fast or as often!
So I guess you can chalk this one up to an arroweous incident.
Pete