"He who marches out of step hears another drum." ~ Ken Kesey
Drop the tag line if they do not want to then increase the logo to 4" wide, it is a narrow logo it will not look bad at 4" and drop the whole tag line beneath so you can expand it the width of the entire logo.
So they meant to spell Since? Not Sense?EDIT; Never mind. I see you spotted it. Nice catch because you know they would have blamed you