RestHUD is also called when using sv_restart <#> and when starting a demo recording, I don't know what you mean by "in the middle of a round." Anyway, this plugin is meant for TS (The Specialists) where there aren't any rounds to speak of, so that drops out. Also, I don't plan on recording a demo, but even if I would, I wouldn't mind having the bots' health be reset to the given value.
Just in case you were wondering, the purpose of the plugin is so that all of the bots or 'zombies' will spawn with a different amount of hp than 100 every time they spawn.
As far as I know, the plugin works flawlessly, except for the inconvenience that when you change the zombiehp cvar, the zombie won't receive the given amount of hp until it dies.