I can't agree with calling this underhanded on Christie's part. The law, while stupid, actually is the law, not a creation of the governor's or regulator's discretion. See his justification:
"This administration does not find it appropriate to unilaterally change the way cars are sold in New Jersey without legislation and Tesla has been aware of this position since the beginning."[1]
It would be far more underhanded for the governor to exempt a single organization from the rules. Yes, the rules are stupid, but tomorrow it's going to be a time when you do agree with the law, and it amounts to giving a bad guy some special privilege.
[1]http://www.itproportal.com/2014/03/13/new-jersey-bans-the-sa...