(adsbygoogle = window.adsbygoogle || []).push({}); will bypassing multiplayer get me banned or just derank me?

Neither.
You can't bypass and go online on OFW. You can, however, have a lower patch and go online by unpatching and such.

thats what im doing, im trying 1.02. im trying to do the combat training glitch but it looks like its hot fixed. but there is a way around it. cough* milani-king cough*

I believe you can remove the hotfixes through the USRDIR folder. There's hotfixes for zombies, but you can check to see if there are for multiplayer so you can remove them and then do so. Also, unsure of 'milani-king'

that would be sick if i can but i doubt it