Very responsibly done! The issue was not that they had to share the logs with law enforcement, the issue was that marketing message was incorrect from them. This is a responsible step.
The privacy-centric nature of this abuse is unlikely to result in a class-action-type of response, but Caveat Emptor abuses can be dealt with by the marketplace, too.
Probably the best you could hope for would be to get out of a long term contract "I paid for a 2 year term based on promises that weren't true"
Otherwise, your best recourse to prevent your IP from being disclosed in the future is to find a provider that won't disclose it under any circumstances (probably not possible), or hide your IP yourself.
Did they also fix the part about "no personal info to open an account?". They require a phone number to register through Tor >.<