if you have the DPS Gluth can be done without even worrying about the zombies, just tank him where he stands. But you probably wouldnt have the dps with only 5, and.

It's worth doing for the fun of it, but you have to be really overgeared, negating the usefulness of any gear drops, save for a few, like trinkets.

I'd clear what you can by yourself, then Pug the rest... more shards for you!