Yeah I'd really use two people to carry that one. Trying to push it is only going to weaken what might be salvageable. Notice that the two bottom rails aren't even on it. The internal top tabs that slide down into the vertical pieces might snap off, if not already toast.
There are some old threads here about how to reinforce the frame. I had one agented by my sister a few years ago for her husband and when I got a chance to visit them, noticed the whole thing was leaning. I took the whole thing apart and gamely "built up" the internal top tabs with J-B Weld, let it set, then reassembled.
You'd be needing a few replacement star nuts as well. There's a couple methods for installing them ... All depends on if you want to keep/fix it, or maybe just use the pieces for other projects later on.
But yeah, get 'er first!
An O code SSP was my first, and is still my main cooker.