Yahoo announced later in the day that it planned to hold its annual shareholders meeting on August 1 in San Jose, Calif. The meeting was originally scheduled for July 3, but the company announced a delay when one of its board members resigned in May.

“It’s no longer a mystery to me why Microsoft’s offer isn’t around,” Icahn said in his Journal interview. “How can Yahoo keep saying they’re willing to negotiate and sell the company on the one hand, while at the same time they’re completely sabotaging the process without telling anyone.”

Icahn apparently is irate over newly released details from a shareholders lawsuit unsealed Monday, according to the Journal. In the amended lawsuit by two Detroit retirement funds, Yang is portrayed as the architect of a controversial employee severance program, which would be triggered if Yahoo undergoes a change in control.

Billionaire investor Carl Icahn plans to seek the ouster of Yahoo CEO Jerry Yang, should his dissident slate of directors gain control of Yahoo’s board, according to a report in The Wall Street Journal.

Icahn noted he believes the unsealed shareholders lawsuit will aid his efforts to win a proxy fight to unseat Yahoo’s board, especially given his belief that investors will fear Microsoft will not come back with a buyout bid until Yang and the current board are gone.

Updated: 5:15 p.m. PDT with annual meeting announcement.

Icahn previously has centered his comments on removing Yahoo’s board of directors, of which Yang is one of nine members who are up for re-election to a one-year term, when the next annual shareholders meeting is held.

The Journal also reported Yahoo’s board is expected to meet Tuesday.

The change in control applies to not only a buyout, like the one Microsoft had on the table before it withdrew its $33 a share bid for Yahoo on May 3, but also a change in control of a majority of Yahoo’s board, as noted in a CNET News.com blog.