I don't think so.Unless he has a planet stationed in the 1st house that will take dominion.Otherwise he remains a Scorpio Asc.
I see that Uranus just made it to the 2nd house-was nearly in the 1st house.
Sometimes the time of birth could be off-for whatever reason. If you are sure that this is it and the person is not showing very clear Uranus traits,then the Asc position stands.
the89freespirit started a thread where they mentioned that the Asc is like the relationship that we have with the parents.
And I suggested that it could even be extended to the external world than is outside oneself.
Keeping that in mind,how does he respond to the external world?
Asc in Scorpio usually see their external world as too indulgent,too complacent and too concerned with keeping things as they have always been.Without willing to change(Taurus Dsc).
So the individual is usually interested in rocking the boat,unearthing what lurks beneath safe smiles and seeing things as layered etc.Complexity intrigues them.
EDIT: Now that I look at it the 2nd time. He has quite an interesting chart.
The Sun/Moon in 3rd/9th respectively may give him a very intellectual disposition. Whilst the stellium in 2nd gives Taurus traits.
But I still think that even with this,Asc in Scorpio may give his outward nature a more "illusive" persona.