"is off of" is not considered correct in written English.
The correct phrase to use is "is off" or "is off of." Here is an example of correct usage: "She is off work for the rest of the week."
I'm actually trying to do interviews with many great jazz artists called "Jazz Is A Spirit," which is off of one of my CDs back ten years ago.
"In the real world, the focus is off of counterfeiting".
In The Times 10 days ago: "Senator John McCain... is off of the defensive......
Banks handle trading that is off of the exchanges, or so-called over-the-counter trading.
The third bedroom is off of the kitchen, which some buyers would want to redo.
"I'm pretty excited for the 200 because the pressure of the 100 is off of me," Jeter said.
Once the data is off of the iOS device, Apple has virtually no ability to monitor or limit its use".
"You end up coming up with new ideas because your mind is off of it," he said.
The Giants' offensive star of the game, linebacker Michael Boley, has cramped up and is off of the field.
You listed Brady as the best choice at No. 5 if Rodgers is off of the board.
