He decided to force Fadell's hand.
He gathered a roomful of the twenty or so people who had been assigned to the project.
When Fadell walked in, Rubinstein told him, "Tony, we're not doing this project unless you sign on full-time.
Are you in or out? You have to decide right now."
Fadell looked Rubinstein in the eye, then turned to the audience and said,
"Does this always happen at Apple, that people are put under duress to sign an offer?"
He paused for a moment, said yes, and grudgingly shook Rubinstein's hand.
"It left some very unsettling feeling between Jon and me for many years," Fadell recalled.
Rubinstein agreed: "I don't think he ever forgave me for that."