Anyone know how to get the N900 out of mass storage mode?

I had it connected to my PC (windows 7) in mass storage mode. Ejected it in the normal whay from the PC end then unplugged it.

Now it still thinks its connected to USB with the USB symbol appearing etc. If I try and power it off from the menu it says I need to disconnect from the PC first!

If I reconnected it the the PC I dont get asked what mode I want, it just appears as a USB connected drive.

I could always yank the battery of course, but it still looks to be charging and Id like to know why its in this state!

FYI Ive got ssh server, Community SSU installed, Nitdroid installed on eMMC, multiboot setup to allow nitdriod and the overclocking kernel (version 46, currently overclocked to 850MHz at lv)

it does that to me sometimes too. pulling out the battery.. infallible