Either a victim or a victor be, James, that choice is yours.
Allowing the circumstances to dictate your response means that circumstances win. Deciding to not allow circumstance to dictate, as spudlydoo illustrates, means you grasp the power to craft your victory. You are intelligent - grasp the potential for victory. You need think "I'm worthy of that victory".
True you have received rough justice. True, as with most things, you are in some way responsible for that. However put aside these useless thoughts, put aside the stress, the necessity for vindication, even comprehension and understanding, these will always be pyrrhic victories. These victories are after the fact.
Grasp what rates. Grab the facts.
Focus and grow your excellence.
Focus not on the mistakes of others.
Focus on the people who enjoy your presence.
Focus not on your detractors.
Focus on all the positives you contribute.
Many are excited by your presence here.
These excellences rate. Push the nonsense aside.
None of the personalities here will matter in 100 years time but what you say could. Focus on the quality of what you say.