“So, why didn’t they arrest him as he went to or left from work...”
As I’ve posted many times, I think they should have served the search warrant on the wife while he was at work. No SWAT required. But I guess the logistics of four simultaneous house raids may have made that difficult.
They should have the sheriff serve the warrant after knocking on the door and waiting for the occupant to answer.
“Putting on the big boy pants and doing your job” must be considered too scary.