I don't believe that we were in any sort of disagreement that the mass is Christo-centric.  That doesn't obviate any "ripples" extending from that center.
"That we ask for the intercession of the saints is clearly strongly VERTICALLY focused as the saints are in heaven. They have no influence or standing outside of their divine connection with God!"
The vertical focus is TO God.  The saints remain part of the Church.  The concept of "vertical" refers to our relationship to the LORD, not a definite direction (toward heaven).  The horizontal refers to our relationship with the larger Church (including the Triumphant Church), foremost, in the context of the mass.  
To whom are we offering His Peace? Hint.
You asked for those parts that represent the horizontal; I provided those.  This in no way characterizes the mass as human-centric, nor does the article, as I see it.  Again, disagree if you like, but it's more than just me with whom you disagree - Tertullian, Cyprian, Paul and others.