Huge victory for Lamar Odom -- the ex-NBA star is finally in possession of his own Instagram page again ... after claiming his former management refused to give him access.
Odom shared his relief on the social media platform on Wednesday ... saying, "I'm back! Got access to my account thanks to Instagram."
Odom -- who was without his IG since late July -- was fighting like hell to get his account back. In fact, he literally went to the IG headquarters in California to get it handled this week.