There's some really bad reporting there. No, you can't see guy wires pulled from the ground, but you can see some that hit the ground with enough force to embed themselves several inches into the ground.
I've done some tower work. Up to about the 400 foot level. Never loved it but I can do it.
Raw speculation: Since they were only working at about the 100 foot level, they were probably working on installing something, maybe cell antennas. To do this you may use a capstan winch to haul the antenna array up the tower and those things can generate quite a pull. Fumble finger the capstan operation and you can pull a lot harder on the tower than you should. Another possibility is that said (heavy) cell equipment assembly may have dropped some distance and upon stopping at the end of the rope, or impacting a standoff or other tower attachment, may have shock loaded that part of the tower beyond structural limits.
There's a heck of a lot that can go wrong when doing tower work. Even if you don't do something really stupid like unbolt a structural framing member to get a length of hardline inside the tower framing.