Wake/Sleep issue - Lid closed awake, lid open sleeping, wont wake

MBP/Lion - I'm using my MBP in dual monitor mode with an external monitor and power supply connected. If I close the lid and then disconnect the monitor, my MBP won't wake after opening the lid. I know that with Lion a change was made and the power stays on  with an external monitor attached and the lid closed (with the adapter plugged in), but if you unplug the display, there doesn't seem a way out of this state. Even plugging the monitor back in, the display wont refresh (just black).
In this state the power managment is confused. When closed, the power light is on, with the lid opened the power light goes off, the display remains blank and I can't wake the device. The only solution is to re-boot. 
This *****, as I just want to close the lid, unplug power and the monitor and leave work to go home. I end up running the battery down if I don't catch it before putting the MBP in my bag, and I always have to reboot. Anyone else with this problem? Any solutions out there?

I got a fix for you but you have to follow these instructions exactly:
1. Unplug everything from your Macbook Pro.
2. Open Terminal.
3. Type: sudo nvram boot-args="iog=0x0"
4. Enter your password.
5. Reset your Mac and plug everything back in.
6. Your computer will now be free of one more lion bug.
If for any reason you want the old functionality back Zap the PRAM (Turn on your Mac and hold down the Command, Option, P, and R keys all at the same time)

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