@One_Angry_Panda. You do not have to ODIN back to VRALJB if your goal is to reroot on VRAMC3. The above Android forum link that you posted is a rooting guide from 2012 that won't work on VRAMC3.
If you use ODIN version 3.0.7, you should be able to use one of the stock VRAMC3 ROM'S from Xda to restore back to stock VRAMC3.... then use Adam Outler's Casual program to reroot and unlock the bootloader on VRAMC3. ( I won't post the links because I think external links are not allowed here). The version of Casual that worked for me was R515...under the download area on Adam Outler's guide "Jailbreak][Root][Recovery] No You Verizon -VRAMC3 --update 10MAY13".... just make sure you totally disable all virus scanning on your computer before running it.. including Windows Defender... (Also.... after you restore to stock VRAMC3....Don't take the update to version 4.3 because CASUAL does not work on 4.3 and there's no way to unlock the bootloader on 4.3 at this time).
Xda member Droidstyle has a very helpful guide on how to restore to stock... it's in the Xda "Verizon Galaxy Note II Android Development" section.
Developer Imnuts also has a guide on Xda with stock recovery images for VRAMC3 ( you can find Imnuts guide in the Xda "Verizon Galaxy Note II Android Development" section too. Always verify the Md5 checksums before flashing anything through ODIN.
One final thing that might be helpful is a YouTube video I found on restoring the Note 2 to stock Verizon VRAMC3.... you can find the video by entering the search terms ( restore stock note 2 Verizon ) .... it's the first video to come up.... posted by Rootjunky.
I hope this helps and good luck with trying to fix your device.