Also, you keep going back and forth between saying you’re allowed to daven to the Rebbe because he’s a memutzeh hamechaber, and denying that you’re davening to the Rebbe. Please make up your mind.
And don’t kid yourself; there are people who call him boreinu; you don’t think they’re likely to forget about Hashem? Besides, shituf is assur even if Hashem is in the picture. Worshiping the sun is not only assur because one might forget Hashem.