I have conceded that while not perfect, it is a lot better than some of the installs that require significantly cutting away parts of the front grille.
I ended up bending the connector mounting pins up then level again with a piece of pipe so that they are now about 1" higher. I then had to add a couple of 1" spacers as the tabs were too short (did not protrude through the front of the grille far enough).
Still not happy with it, but at least I can remove the connector without damage to the grille if I come up with anything better.
If I wanted to over-engineer it, I suppose I could remove the panel with the "Pontiac" emblem on it (it attaches with just two tabs). This panel covers up the front license plate mounting location for states that do not require a front license.
Then I suppose I could place the connector behind that panel. Then, I could remove the panel when I needed to tow, and replace it when done.