His 22K BL_ID indicates that his sudden accusation, though poorly constructed and thus easy to ridicule, may not entirely be unjustified.
I vaguely remember seeing you banned from a couple of servers a long time ago, so it's not really too outlandish of him to come out with that, despite being improper of him to do so.
I noticed that you never took the initiative yourself to ask him why he came out with what he said in order to settle the grudge once and for all, instead returning an insult, indicating that there is clearly more to it regardless of the possible semantics that we could get into to try and explain why you never settled it.
I've seen your sort of behaviour with different people many times before: plenty of excuses on hand, a generic reply, or no response at all in order to protect themselves, instead twisting what you say afterwards into something that simply isn't true.
Instead of making this drama thread, you should have kept silent. I always try to reason with people in order to get to the bottom of the real problem before even considering banning them, and I'm usually able to settle the issue before reaching a drama-level ban, whereas this is something you should be able to brush off if it really was uncalled for.
Perhaps I'm reading between the lines too much. Nevertheless, this is simply an experienced observation.