We should seriously attempt to get back all of our relics before the next patch goes in, also, try and grab a few of mids, just to spite them.
But I've been thinking something should seriously be done to prevent just these sort of tactics from happening. I mean, there should be a way to keep the challenge of taking a relic up to normal levels no matter how many people are online. Perhaps the # of guards spawned could be inversely proportional to the number of 40-50s in the game. Start with 50 guards, and for every 40~50 player, remove one or two. add onto this the effect the taking of all our keeps. I think the challenge level for taking a relic could remain somewhat balanced despite the time of day if so. Also, make the guards unmezzable. That would prevent the sheer numbers from being taken down by a small group of 50th level healers.
Anyways, just my ideas.
I'll keep you all informed about alliance relic attempts. There are none planned at this point.