You cannot get access unless you know the account and username he used. BUT you can get a free transcript from the IRS:
https://www.irs.gov/individuals/get-transcript
There seems to be more to this story. Your spouse cannot file a joint return without your permission, and you have every right to see that return--it has your name and Social Security number on it and your information on it. And if he e-filed it, it has your "electronic" signature.
Although you can get the federal return from the IRS, you might have to pursue the state return through your state somehow. The IRS will not know anything about your state return.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
