"According to a statement by ICE, Mr. Lame entered the United States on April 30 and overstayed the terms of his visa. He was granted voluntary departure on Friday and has since left the country."
- from NYT
ICE didn't say it was a 90 day visa.
Lame hasn't commented.
You make a bold assumption that he was at Harry Reid airport to leave the US, as opposed to flying to another US city.
Again, the process worked exactly as intended. Lame left voluntarily and peaceably, which keeps a deportation order off his record. More than the hooligans burning LA can say.