Let me squash one urban myth about how things work on a moderated forum: 9.9999999 times out of 10 moderators don't owe an explanation to anyone for closing threads. They also don't owe explanations for banning, kicking or suspending. Publicly probing and putting them on trial via a thread, demanding said explanations, does the exact opposite of reversing their decisions. No matter how fair/unfair it was.
When you come out of the cold wild west wastelands of unmoderated newsgroups, you're in the warmth of an organized house someone else built. There are rules to these places and how/when/if they get enforced isn't democratic. Despite the usual complaint that moderators are power mad, more often than not they are well intentioned people just trying to clean house. A house the world keeps taking several massive shits in, on the floor of the main living room, on an hourly basis. Usually followed by taunting.
If your thread is closed, put 1 and 1 together then move on. We have important shit like pinball to discuss.