Am I in disagreement with Wittgenstein or am I misunderstanding the concept?
Your initial post gives us, the reader, a little bit of your perspective in regards to "Wittgenstein's concept". However, it does not introduce his concept with links, names, or references, so a wealth of individuals could have absolutely no clue what you are talking about. Luckily, I consider myself to be quite adept at dealing with information having little to no background.
Regardless of what this "Wittgenstein's concept" is:
It makes little sense to me that the reality could be confined to language.
Reality is not confined to only language. Reality is only vaguely described using languages, images, and other sorts of communication. These forms of communication rarely are able to depict reality in its entirety. In other words, it'd be impossible to accurately describe all of reality using any one form of communication.
It's probably possible to capture the entirety of tiny pieces though.
Although Wittgenstein may just be postulating that our minds conception of reality is confined to language, I just think he is a person who thinks with words and not with pictures. I say understanding trancends definition and that we know much and will never be able to express it. Am I in disagreement with Wittgenstein or am I misunderstanding the concept?
No one can verify without background...
If what he was saying is that the whole of reality can be described using language, then you probably are in disagreement, but until that is verified , there still is a equal possibility that you are misunderstanding what Wittgenstein is saying.