The problem, even with a spinal cord cut intentionally and carefully, is that the surgeon has no way to know what connections in the head go to what connections in the body.
It sounds like he's simply hoping it all sorts itself out somehow. Or maybe that the brain could eventually remap everything. Seems unlikely. Especially within two years.
The basic idea would be physiotherapy afterwards to make the brain re-learn how to move the body
Work expands to fill the time available. -- Cyril Northcote Parkinson, "The Economist", 1955