I'll agree with that 100%.
At our previous home, I had a 50-ft amateur radio tower that took a direct lightning hit. In addition to spewing the upper antenna all over the property, the dirt around the 8' ground rods at the base of the tower was turned into glass, very effectively insulating the ground rods. I used to be able to measure a ground conductivity until the hit. The solution was to drive a new set of ground rods in different locations.
Was your grounding system for the tower tied back to your premise grounding system?