quick CJ spring hanger removal question

I am trying to remove my front axle rear spring hangers so I can outboard the springs. The hangers don't appear to be welded around the edges, it looks like their are two big either spot welds or rivets or carriage bolts? The frame is boxed where they are, so I cant see the inside, should I cut these nubs off, and try to pund the suckers off? If not how do I get the things off.

thanks