Well, if you want, you could just uninstall all the mods you
have installed, and then follow the correct installation order...so install a non-WeiDU mod first (I remember reading somewhere that you can only have one...right?) and then the WeiDU ones you use.
If you go to
WeiDU.org and click on "Other WeiDU mods" it brings up a site that contains info on all mods possible. Click on the relevent links, and you'll end up on a page where it gives the various possible BG2 mods. If you sift through those, you can see which mods are WeiDU and which aren't, since the ones that aren't have [Non-WeiDU] written next to them.
Of course, if you can't be bothered to do all that (I know, it sounds a little long-winded) as long as it's working fine now, I guess you don't really need to do anything.