Thanks for the replies.
@DoninGA So, here is what I did. I deleted him and added him back in. I said he lived with me for 7 months to get HoH because I felt it qualified since he is a full-time student living in an apartment that I pay for near the college. Otherwise, he would have been at home with me. I said I had a written agreement and that he was being claimed on her tax return as a dependent, and he had not made more than $5050. I feel like it is ok to do it that way since the IRS site (and you) says explicitly that absences for education count as living with you. Taxes are so weird, but this is the last year I will have the whole dependent/HoH swap with my ex since he will graduate in May. It was a significant bump in my refund, more than I expected. I haven't finished filing yet.
