Root Rooted phone - no longer need root

[zuben el genub]

I rooted the Nexus S when I first got it. I used the root method that did not unlock the bootloader. I got the upgrade to ICS, and since ICS froze the stuff I didn't want, I no longer need Titanium Backup on the Nexus. However, I did freeze some apps like messenger that wouldn't let me use Chomp or Go.

Can I uninstall TB and what will happen if I do?

If that root method with not unlocking the bootloader would be updated, I would root again. I'm content with the standard ROM.