Unlock bootloader?

[anon(8792469)]

Hello, I was Rooted, S-Off, Bootloader Unlocked, and on a custom ROM and recovery. Then, something wasn't working so I flashed an RUU. This messed everything up, and now I am S-On, Bootloader Locked, Stock Rom/Recovery. I still kept my root, and I presume I have a custom kernel as I cannot unroot. Is there a way to exploit this to get back to Unlocked? BTW: I'm on firmware 5.28.605.2