what is a detainer
Federal Crime Lawyer
A detainer is generally a court order that is lodged against someone in order to prevent them from bailing out on a particular case due to some sort of violation (i.e. another arrest, etc.). In your case, it is tough to answer your question without more information, but it sounds like a detainer may have been lodged against you by the probation office because you supposedly violated your house arrest conditions. If that is the case, it is likely that the detainer will remain in effect until a hearing is held on your alleged violation. Hope this helps....
(Please note that my answer is not intended to constitute legal advice of any kind, nor does it establish an attorney-client relationship.)