Closing/unloading displayable objects using DriveSuma

Is there a way to close/unload a displayable objects file that has been loaded into SUMA? For context, I am using a DriveSuma script to load and screenshot my data, which includes a displayable object file I'm loading using the following line:

DriveSuma -com viewer_cont -load_do ${filename}.1D

However, I can't seem to unload/toggle the display of that file to off without killing the entire instance of SUMA. Is there an equivalent to -Dsp XXX for displayable objects?

One way is to remove the objects in the NIML DO file and just leave a header and then reload the file.

<nido_head
coord_type = 'fixed'
default_color = '1.0 1.0 1.0'
default_font = 'he18'
/>