Alright: give me the reigning expert on tadpole removal. A higher one, that is not divine or a devil. Give me the person to make Omeluum look like a "two year old". If you can, I will believe you. If you can't, you'll know now why we disagree about what the set up /is/.
This is a pretty funny take to be honest. Pretty much any god can get rid of that tadpole, stasis or not...we know at least four deities are in some way involved with Baldur's Gate...the dead three and Shar but there will almost certainly be some good aligned deities having a word or two along the way...I wouldn't be surprised if a few other deities go out of their way to approach your party for their own interests...whether to stop the dead three or to try to manipulate you into aiding them. Also ALL mind flayers have genius level intellect...each and every one. Omeluum's intellect isn't special among his kind...ulitharids are smarter.