[rdj]

"I'm the only one with the knowledge base required to make this business happen".

If the above quote is true, why did you let the other two become equal partners? Seems like there was a mismatch to begin with, assuming this isn't a detail you just now realized.

Have you tried talking to them? Maybe just getting it out in the open would fix some things. They may even be relieved and just want to walk away, at which point you can have them sign over all rights to the project, etc.