Unhappy [Q] Stuck at verizon boot screen after editing someting in /system/etc

Hi guys, I'm new here and I think I just messed somethin up.
I just rooted my G2 verizon last night but didn't install a custom recovery, just some apps and xposed.
Was tinkering around in xposed a bit and making a few changes to the statusbar etc while listening to some music. I realized the music was way too low and when i'm out in public i can barely hear it on my headphones, so i searched up an article that walks you through steps to boost the volume:

hxxp:// opensourcegangster .com/blog/2014/3/23/android-sound-mod-boost-speaker-and-headphone-volume

basically followed the steps in here, edited the XML and then powered down to reboot.

now the phone just gets stuck at the verizon screen forever. i get passed the LG logo. then verizon logo continues to animate and never freezes up, but i've left it on for 20+ minutes and the thing just wont get past the verizon logo. i'm thinking this can be resolved by clearing some sort of cache but i dont have a custom recovery installed. i even got lazy and decided to bite the bullet and just do a hard reset, but when i do, i see the little android logo, and then the lg logo, and then back to the verizon logo.

have no idea where to go from here
halp.