Changing description style on same screen?

Maybe I’m not doing it correctly - when I set a description style to “video” and create an roSpringboard screen, and then .show() the screen it shows up perfectly fine. If I later, in the same routine, want to redefine the description style to movie, load or stretch the thumbnail to fit, and show() the screen again the thumbnail size/area doesn’t change like it should. Is there any way to make this happen without destroying the rospringboard screen and recreating it?