The phrase 'sequestered themselves' is correct and can be used in written English.
It is usually used to describe a group of people isolating themselves from others in order to focus on a specific task. For example, "The members of the jury sequestered themselves in order to reach a verdict without outside influences."
When the reading was over, Jean, Groening, Maxtone-Graham and Brooks sequestered themselves in Jean's office to compare notes, while the writers milled around outside, awaiting instructions.
After their daybreak return to Los Angeles, both women sequestered themselves inside their homes on Wednesday, enjoying their reunions with their families.
Scorned as nonbelievers during about 400 years of Ottoman rule and forced to pay a special tax, the Alawites sequestered themselves in impoverished mountain redoubts overlooking the Mediterranean.
As the book opens, Effie and her mother, Nora, have sequestered themselves in Nora's large, dank family home off the coast of Scotland, where they've decided to wrap themselves in shawls and blankets and tell each other stories.
At the same time, members of the New Milford Police Department sequestered themselves at their barracks on Route 202, seeking solace from counselors brought in by town officials, and reaching out to fellow officers nationwide through a Web site.
For their second album, "Coexist," the band members — after two years of non-stop touring — sequestered themselves for six months in a makeshift recording studio in a candlelit London attic draped with black velvet.
In Philadelphia he found a group of professional "guinea pigs," as they call themselves, sequestered in a hospital's clinical research unit while they were testing a prospective new drug.
Moreover, our immunohistochemical data from tumor sections suggests increased amounts of IL-8 on or in tumor cells expressing DARC as compared to control tumors in vivo and supports the notion that perhaps the chemotactic gradients of chemokines required to induce appropriate neovascular responses are not formed and instead the chemokines are sequestered by the tumor cells themselves.
The father and his 67-year-old wife, the flock's "True Parents," as they call themselves, now live mainly in Korea, sequestered in their "palace" nestled in mountains halfway between Seoul and the demilitarized zone.
The premise: five people, sequestered in the proverbial green room, reveal tidbits about themselves — their jobs, their beliefs, their love lives — to another five people, who sit in judgment of them along with the show's host, the psychotherapist Robi Ludwig.
