Harry, you have made some fair points, and I for one have edited my previous post to reflect that without the facts, it is unfair to speculate about specifics.
FWIW, my options in similar circumstances I have faced have been exactly as you have described, perhaps you have read the ASR's
In every instance in Africa, I declined the offer of a wing-walker and utilised the company mandated, risk assessed and trained tug driver and engineer to get us out of trouble. It is of course whilst the aircraft is moving under its own power, entirely the commanders responsibility for obstacle clearance, and in the case of this being not "assured" my default position is to pass that baton onto those in a far better position to assess said clearance and take that responsibility. A cop out I am sure some will say, for me it's merely self preservation.