For a moment there, it sure looked like the towbar was welded together. Instead of having shearpins
And yes, SAS generally uses 1 man pushback. But thats with TBL's (TowBarLess), which graps the nosewheel and lifts it up. Works very well. Comm is another story
On larger AC types however, we (in SAS/OSL, that is..) do have an additional rampy or engineer, to walk the aircraft out.