Aly,
The site closes the auction when the page is visited if it detects the user is disabled. The bid form at the bottom is still active because of how the page loads. It won't allow any other bids however after that... I'll add this issue to the to-do list so it doesn't allow bidding at all...but either way shouldn't matter if the auction is closed...
Auctions aren't deleted at all until the batch auction delete runs that deletes auctions older than a certain date. That also includes these types of auctions by disabled users.
Hope this helps to clear it up...
