Sherman tanks, given the large number produced, seem to be everywhere. Half of the unit headquarters, battalion and above, seem to have one parked in front of their buildings at Ft. Hood, TX. National Guard armories and veterans' organizations like to place military hardware on their property. The oldest armory in Ohio, constructed in 1911 and still occupied by the Army National Guard before they vacated recently, has or had a Sherman parked out front. I imagine depending on whatever entity ends up purchasing the structure, may decide to dispose of the tank. Hopefully it goes to a museum and is at least cosmetically restored. A similar scenario probably accounts for the move you saw.
The demand for Shermans was so great during the Second World War that locomotive manufacturers were pressed into service to build them. Early production models were powered with radial aircraft engines. Given that tanks spent alot more time idling their engines than aircraft, the plugs in these engines were prone to frequent fouling and had to be removed, and sand blasted.
I couldn't view the picture. I would have liked to have been able to see it.