Unrooting without computer?

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http://forum.xda-developers.com – Well guys, I've got a little situation here. My Rezound is rooted S-on running new firmware, so bootloader shows "unlocked tampered". My charging port took a dump on me and verizon is sending me a replacement but I'm pretty sure I need to get rid of that Tampered Unlocked message before sending this one in. I've searched and found several threads on this but all use ADB and I have no way to connect to a computer since the port is out. Can anyone help me out with this? Thanks (HowTos)