Anytime you are in default on a federal loan, the government is entitled to take you tax refund for any amount due. Guarantor do remove individuals that enter into repayment however borrowers do have to meet certain conditions. Conditions vary by each guarantor...some require you to be in repayment by a certain date, some require 3 payments, others require a minimum dollar paid in that year. If you started paying in November, it was probably too late or not enough to remove you from the off setlist.
If you continue with the rehab payment, your loan will be out of default by next tax season. Plus because you were laid off, you cannot be garnished for at least 6 months.