OS X Lion switching to 4:3 resolution, then back to 16:10 during boot

Hey everyone, so earlier today I installed a program called iDisplay to play with using my tablet as a second monitor. It was a .pkg installer that required a restart after the installation, so I figured it was making a few little tweaks to display settings in OS X. Well, the app was lame and I uninstalled the program.
Now though, whenever my MacBook Pro boots up, instead of getting the smooth transition of the Apple logo sliding up and revealing the login screen, the screen fades and changes to what looks like 640x480, stays that classic OS X blue for a few seconds, then switches back to native 1680x1050. All in all it adds a few seconds to my boot up before I'm able to log in.
This is more of an annoying problem than anything else, and I'm annoyed that a silly piece of software like this was the cause of it. There was no formal uninstaller that I could find so I just used AppCleaner, which scans for related files and deletes them too. Unfortunately I don't have a Time Machine backup that I could revert to.
To try and remedy the problem, I did a bit of research. I haven't found this exact problem, but others with similar display issues got some advice. So, I resetted my PRAM/NVRAM using the key combo on boot. I deleted the "windowserver" plist file in my home directory's Library > Preferences > ByHost. I also booted into Safe Mode, selected a lower resolution, reselected my native one, as if to "realign" the default, but it didn't work.
This problem adds several seconds to my boot time, and sometimes it fails to revert back to native res, leaving me with a small corner of the login screen with which I can't do anything, prompting another reboot. Does anyone have any other ideas of how I could fix this problem, short of a reinstallation?

You probably haven't deleted everything the program installed.
Check to see if it left a login item behind. Check Console to see if there's a log file for the installer; if so, it may list files you can manually remove. It may not have left one behind, however. I'm not a Console guru, but I have re-run the offending installer before and then looked at the logs and found where it put stuff and then removed it.
And of course try emailing the developer for instructions. Kinda lame they didn't include an uninstaller for something that mucks about like this; post something in reviews of it in iTunes to warn others.
rob

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