Good is you are an active commish and took action for benefit of the league.
Bad is you did not email owner with a deadline asking for a reply on his poor roster. Bad that you didn't try to help or coach him on how to manage his roster. Last but not least it was bad that you didn't do the above before re-assigning his team.
I would give his team back to him without hesitation and maybe help him a bit.
Also good is that you are using this forum and seeking help/guidance.
This is only free fantasy hockey do no biggy, don'y sweat it.