Puff, I wanted to say that you cannot revert it, if it's bricked.
Now, each channel as an ID associated with it. When you install the channel, it will leave a ticket on the internal wii system with that ID.
If I am not wrong, HBC's one is HAXX. So, if you just delete the channel the ticket will still be there. It might be possible for nintendo, in a future update, to look at those tickets and see if you have ever installed it.
When using wads, you can use the wad manager to delete the channel AND the ticket, but that is more complicated with boot.dol files. You can still do it using AnyTitleDeleter i.e. But formating the system is much more safe.