You can also just go back to the US. It's only working in the US, paying and subsequently filing taxes, that would cause the IRS to start looking into you.

Apparently if you're in such a situation you need a tax lawyer, not an accountant. Accountants are mandatory reporters to the IRS, so if you tell them you've not filed taxes they have to report you, while laywers have client confidentiality and would be able to help you try and smooth things over with the IRS.