Mentally, yes those can be withdrawal symptoms. They can also be a number of other things.
Some people have stopped without a program, some people have stopped WITH a program, some people never stop, some people have stopped and started for fifty years, causing untold chaos for people who allow themselves and their children to ride the rollercoaster.
Some people try to prove they don't have an alcohol problem by quitting for X days (Just long enough to get you off their back.) Some people try to prove they don't have an alcohol problem because "they only drink beer." Some people don't care whether you think they have an alcohol problem or not.
Some people don't have an alcohol problem, but they are still abusers.
Is he still treating you horribly?
It's out of your control what he chooses, and what happens -- 100% out of your control. Are you doing anything for yourself, so it doesn't MATTER which of the above he chooses? Al-anon, counseling, anything?