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Months after publicly defending his role as an eBay director against Carl C. Icahn, the venture capitalist Marc Andreessen is now stepping down from eBay’s board.

As eBay moves to spin off its PayPal payments unit, effectively breaking itself in two, Mr. Andreessen said the time had come for him to resign as a director.

The e-commerce company disclosed the move in a news release, complete with a statement praising Mr. Andreessen’s six years of service on the board. But as is his wont, Mr. Andreessen also took to Twitter to tell the news his own way:

1/After 6 years of service + completed decision to split, I’ve decided now is a good time to step off the eBay Board of Directors. — Marc Andreessen (@pmarca) 20 Oct 14

2/It’s been an absolute privilege to serve with John, Pierre, and team, and I could not be more proud of what we’ve accomplished. — Marc Andreessen (@pmarca) 20 Oct 14

3/I wish eBay, and both of its successor companies, all the best in the years to come & will seek to continue to help as much as I can. — Marc Andreessen (@pmarca) 20 Oct 14

The resignation comes months after he vocally defended his tenure as an eBay director, when the company faced a noisy proxy challenge by Mr. Icahn, a campaign aimed at forcing the spinoff of PayPal. During his crusade, Mr. Icahn argued that Mr. Andreessen’s presence on the board may have been problematic, pointing to eBay’s sale of the video phone service Skype to a group that included Mr. Andreessen’s firm, Andreessen Horowitz, as a process riddled with conflicts.

In response, Mr. Andreessen argued that he was transparent about his conflicts of interest and noted that he did not participate in the eBay board’s deliberations about the Skype sales process. He also pointed out that he was nearly unanimously re-elected after the deal.