It depends on when you converted back and size of your total IRA. Unless you post all details here, which is really bad idea, it is really hard to give right advice.
1) did you convert roth back to tradictional within 60 days? If so, you could be ok.
2) your tax is owned based on ratio of total retirement account, 4800/total. you might own majority of tax on $4800 as convertion.
3) it might be a bad idea to convert roth back to traditional. Need more details.