As I understand it, they have a license that applies only to web versions, an interface, or another digital output. But what if I want to print a few books or instructions?
If you violate a license agreement you are liable for whatever repercussions that may initiate. The other party could seek restitution or a judgement.
Your question is no different than any question about breeching a contract or violating terms of an agreement. Even going so far as to say it's not any different than a question about a criminal act ... a la "I understand it's illegal, but what if I just murder a few people?" Yes, that's extreme. But the answer is kind of the same. If you're caught, you are culpable and subject to action.
Will you be caught, who knows. If you are caught, will you have a viable defense, it doesn't sound like it since you clearly understand what the license permits.