jQuery Grid Plugin - jqGrid

Greetings,

I am working with the new jqGRid and trying to evaluate to fit our needs, 

when I am using the delRow method, I see that the row is actually removed from the view but once the user is changing the sort of the grid, the row is returned to the view and disaplyed once more.

I understand that the row is not deleted from the server, I take care of that using ajax call, 

I don't undertsna how to remove it from the local storage

What Am I missing out???

please, your help is much appreciated…