thank you for joining our community.
As for your question, in the usuall case when one is deported according to Dublin then the ban is rigid and applies in any case.
As the European Court of Justice decided in October 2015 (C-290/14):
If one enters the coubtry after such a ban- it is a criminal act and can have legal consequences.
As you are european and work in Germany and you are married to him, the legal way would be for him to go back to Italy and you apply at the German Embassy for Visa for him. Due to the fact he married you- his status has probably then changed from asylum seeker, or not? Because in order to apply for a visa for Germany it is important that he has a Legal Status in Italy.
I hope I could assist you in this question, if you need further assistance please let us know.