[sbrblz]

I have attached the modified plugin with HarryPotter's fix for ease of use.

The only thing I noticed is that the pack only disappears if all human players use it and there are no survivor bots. If there are survivor bots, even if they all grab the upgrade as well, the pack will not disappear. It shouldn't be an issue I supposed with an all human team.

Edit: HarryPotter updated his post above with the latest updated version, I've removed the previously attached file. The new version seems to have a timer to get around the issue of the pack being not disappearing.