First of all, the subject was tapped to share HER VISION of the future direction of the application, not the company's vision. It's his/her intellectual property, blood, sweat and tears here and she's being squeezed out by a penny pincher whose sole motiviation is to advance his career.

Why should the subject bust his/her ass to further the career of a bean counting IT manager. Since it's the subject's vision and IP, the subject should demand (tactfully) to know what's going on. If they're indeed trying to squeeze him/her out then the subject should be hesitant about sharing her vision with him.