Here is the legal problem.
When someone tells you a certain act or omission violates the “the spirit and intent” of any agreement, that means the other side didn’t violate the written agreement, which usually means the other side outsmarted you in the original negotiation.
Does that mean we wouldn't be violating the treaty if we deployed Pershing and Cruise in Poland, The Czech Republic, Slovakia or Hungary? Lots of old mines in the Carpathians to stash missiles in.