How do I set the default sorting for a RadGrid with client-side data binding and sorting?

[Mike Chabot]

A SortExpression set on the server seems incompatible with a RadGrid that is populated with client-side data binding and has client-side sorting. I am wondering if there is a recommended way to identify a column that is sorted by default in this scenario?

 

For example, I want to indicate that the data comes out of the database sorted by Column A by default. If I add a SortExpression on the server, that column is shaded and has an arrow. If I try to sort by Column B using the client-side API, Column A will retain that shading and arrow supplied when the grid structure was created on the server, even though Column B is now being used for sorting and has an arrow also. If I then change the sort back to Column A, Column A gets a second arrow next to the arrow supplied on the server. 

ASP.NET AJAX 2012 Q1 SP1 controls.