excerpt in status plugin widget

When there is no thumbnail image for the excerpt in my status plugin widget, the text still fills only half the widget area. I believe this may be related to a fix made pursuant to an earlier problem I had, which was discussed in this forum. At that time, my thumbnails were overlapping with the text excerpt. The WPMUDev support team suggested some CSS modifications, which included setting max widths. Is there anyway to have “my cake and eat it too?” I.e., can both avoid overlapping text and thumbnail image and also have the text go full width when there is no thumbnail?