Technically speaking, it is possible to have an HTML viewer in your VA01 flavor which can run the customer creation transaction using a shortlink.
However, there are certainly problems with this solution. For instance, what happens when you exit the XD01 transaction in the embedded viewer? In Internet Explorer you usually get some popup message asking if you really want to leave this window or something like this. The whole thing will probably behave differently depending on the browser used.
You'd have to test how this works out for you, but as said, it's doable. Just not sure if this is the right approach in flavor design.