I understand the meaning of defection but can you say "un-defecting" ?

Please see the following article from NY Times.

"When Shahram Amiri, the Iranian scientist, took his C.I.A. handlers by surprise last week by un-defecting back to Tehran, he was gambling with his life. "
http://www.nytimes.com/2010/07/18/weekinreview/18iran.html

Are there any alternative words here?