John,
Just in case it wasn't clear... History has no problem with flying with you per se. It's just in this particular instance, he was trying to hide from the enemy (they didn't see him - or in the game vernacular - he wasn't eyed). Since the ship he was flying is an end-game ship that requires stealth to get into place (and costs money

), he needed to be sure he remained uneyed as long as possible.
You knew where he was, because the game will relay that information to players on the same team, but the other team did not. You were being followed by the enemy in the hopes that by following you, you would take him towards History so that they could spot him. In this case History had to boot you because it was a critical point in the game. It wasn't personal and I'm sure History would be happy to fly with you again.
We all make that or similar mistakes when we're learning. No big deal. And as others have stated, you're permitted two additional call signs or "hider nicks". When booted, you can just log back in using one of the hiders and you'll be able to join the game again.