Sacks ran him out of his own company.
"In the years following his ousting from Zenefits, Conrad has alleged that both a16z and Sacks waged a proxy war in the media to ruin his image. In his own words, Conrad, his board, and Sacks agreed on a friendly exit and press release explaining his move to step down. Conrad explains there was immense pressure from the board to resign, and was shocked when Sacks issued a different press release to the one they had agreed to."
More ominously, the implication is that Sacks set him up for the SEC investigation purely to pressure him out, carve up the company, and profit.
@Cosmichomicide Thank you.