I want to be sure you have all your ideas straight. How comfortable are you with working from the bootloader or from recovery? What tools do you use? Can you access recovery by this method?: Hold "Power" and "Volume Down" for ten seconds and release. This takes you to the bootloader. Then press "Volume Down" once to select the recovery, then press "Volume Up" to activate that option. This should then boot into the recovery. If that is not what happens, let us know what happens instead.
I have unlocked my boot loader which doesn't allow you to use recovery mode.
There should be no problem using any of the various recovery modes with an unlocked bootloader. Stock, TWRP, and CWM should all work fine. Can you describe what you did, what happened, and what you expected to happen?
Is there a way to completely wipe the phone and undo the bootloader thing?
There are several things here. You can wipe the phone and return it to factory defaults by using "fastboot -w". This does not change your bootloader or recovery. You can re-lock you bootloader, but it will always register that the bootloader was once unlocked. There is no real benefit to relocking the bootloader so I won't put instructions here, but let me know if that's what you want to do. Finally, you can flash a new recovery image onto your device, which will wipe out whatever recovery image you had on there. The command looks like "fastboot flash recovery recovery.img".
Also, how can you hide the bootloader unlocked start up screen?
This is simple as flashing a new logo. The command is "fastboot flash logo logo.bin". This will overwrite the stock logo (which checks if the phone is unlocked) with a modified one which looks the same whether it is unlocked or not.
See here for details and downloads: http://forum.xda-developers.com/show....php?t=2548530