"Angela and Leonardo decided to come back and live in the USA".....This pretty much makes it clear that the expressed intent in coming to the US was to reside in the US permanently. Since there is a process to obtain a VISA for a spouse if the intent is to reside in the US, and he entered using a tourist VISA instead, then can definately have problems.
I think the wait and see comment can be explained better by saying that you really cannot tell for sure how they will see this. It is a somewhat subjective matter whether the interviewers will make a big deal of this. The thing to remember is that they definately could and it could be a big problem. That is really the best answer we can give right now.
The only thing to do right now is to keep on with the adjustment process and just be as honest as you can. Hopefully it will not cause a problem.

