OVH/SYS has informed me that they will be performing a big move of equipment to a new wing of the BHS Datacentre (for future-proofing the network) and as such have warned me that some downtime may be possible. They will do what they can to avoid accidentally disconnecting any systems, but technology is technology, and it all needs power.
I'm looking into getting multi-server chat working, probably with a system called 'ConvoSync' since it's less cumbersome than the IRC. It is also available without running Minecraft, in a separate client, as long as the player has configured a ConvoSync password while in-game.
More to come soon.