Given what you've described, a quick fix like that is liable to make things worse. What does the right side tension feel like? Say, compared to your front spokes.

edit: Also, is the wheel true (not rubbing the brake pads as it rotates) and dished correctly (centered between the dropouts. You can gauge this by sticking your fingers between the rim and the seatstays).

edit2: If the DS tension is not super high, and the wheel is generally true and dished correctly, then here is an option. If there are any NDS spokes that are totally loose (rattling around), tighten them just enough to take the slack out, but don't put any tension on them. Then put 1/2, or even a whole, turn on *every* spoke. (Just doing one side would move the rim.) I would still press my luck with a local mechanic, but at least if your wheel goes all wobbly or doesn't track straight, then it's not too hard to undo your changes.