At 4am you are battling with other users of bigtime, perhaps due to Telecom's plan design it had to increase the pipewidth to give all Big Time users full speed...
"And is this heavy use by BigTime users negatively affecting users on other plans, or just other BigTime users? If the problems are limited to BigTime users then I tend to think "so what"? If you don't like it, change plans."
Just look at what happened when it did happen a couple of months ago -> users got up in arms and said left right and centre that they're not happy with what they were promised.
The problem with 'fixing the glitch' is those who are determined to work around traffic management will simply continue to find new ways to get around it it seems, in the same way people get around DRM no matter what they do and as soon as someone works a way around it, they tend to share it around with people!