The New York Times ran a piece this week about Twitter, saying that CEO Dick Costolo is “essentially running the business alone,” and that co-founder Jack Dorsey, who returned to the company last year after leaving in 2008, has assumed a reduced role at the company “after employees complained that he was difficult to work with and repeatedly changed his mind about product directions.”

The report indicated that Dorsey no longer has anyone reporting to him directly, but that he is still involved in strategic decisions.

Today, Dorsey took to Tumblr to address the piece and his role with the company, indicating that he is basically checking in with Twitter once a week, and dedicating most of his time to Square, his other company. Dorsey wrote:

There was a great profile in the New York Times about Twitter’s CEO, Dick Costolo, which mentioned my work at the company. It’s not a common arrangement, so I’d like to clarify a few points.

In Spring of 2011, Dick asked me to take an operational role overseeing product, design, and brand. Our shared goal was to get those organizations back under him as soon as possible, simply because it was the right thing to do for the company. We moved all of my reports back under him in January of this year after leadership was firmly in place. This allowed me to focus on refining our brand and logo, to work more with Dick and the leadership team on our direction forward, and ultimately return the majority of my time to Square, where I’m CEO. I’m back to going to Twitter on Tuesday afternoons, something I started before taking the interim operational role.

We haven’t talked about this publicly because it’s not what people using Twitter every day care about.

I’m fortunate in life to be a part of two foundational and mission-driven organizations, and I’m always going fight like hell to make them thrive. And they are! Now back to our work.

Twitter began to see a great deal of change almost immediately as Dorsey returned in early 2011 with a new focus on getting people to understand what Twitter is and making Twitter usability less reliant on third party apps.

Meanwhile Square has made a number of major announcements, including funding, Square Card Case, and a partnership with Starbucks. In June, Square hit the two million user mark.