Sechel, i believe this is the first time a Lubavitcher on here has admitted to hisgashmus haboreh r”l. Thank you for being honest.
The “problem” with saying that a person is god is that it is against the 13 ikarei emunah, pesukim, and chazal. The targum always translates pesukim figuratively when they use terms that connote physicality.
Case in point, in the pasuk you quoted, the targum says they saw the “yakara d’shem” twice, the honor of Hashem and the honor of underneath His throne. It’s a way of saying that they perceived the shechina.
Ilike most heretical beliefs, it’s also shtusim. Hashem is infinite and One, and if something is quantified in any way, such as having parts, physical or otherwise, it’s no longer infinite nor is it oneness.
This is the problem with the trinity in Christian theology.
As for the raavad, it’s not as if the raavad held of hagshama; he said that people might be misled by agados chazal and pesukim, so such a person, who makes a mistake in learning, the raavad holds is Innocent. The rambam, who all the other rishonim and achronim pasken like(as per the majority of halacha in general) holds that a “nebach an apikores is oich an apikores,” an unfortunate apikores is also an apikores – it’s just too bad. He should have consulted the gedolei yisroel.
So too here; the fact that one rabbi says something which was met with accusations of heresy from the rest of the Torah world that had heard it(many were unaware) should tell you something.