Read paragraphs 12 to 24. The Bureau found that the shop was trying to play "Robin Hood", by illegally helping vehicles through the smog process while charging minimal money to do so. Three undercover cars were set up to fail emissions, and the shop illegally helped all three through without properly fixing them.
The smog tech involved apparently was trying to please his boss and the customers, and it looks like he just needed to get away and find work in a more professional environment. I checked his STAR scores, and they are solid now ... whatever that means.
“Never attribute to malice that which can be adequately explained by stupidity.”