I just finished up my 50 Glavoid shells right before the servers went down. Go go ukon~ I had a friend bst tank while I was on THF for TH. The Atmas used were DG + Earth Wyrm + Heavens. This resulted in 0 dmg taken from physical attacks and made his 2 hours useless. Also, disgorge usually hit for 0 and gorge damage was highly resisted, usually below 300. The earth resistance on top of the -DT bonuses made Stonega IV and Quake II damage average about 200-500 damage with spikes around 700. All in all glavoid simply could not do enough dmg to the pet to be a threat. However, constantly using heel to take pet off during TP moves, plus the ridiculous amount of SS it seems to get after every single TP move means a solo glavoid would simply take too long. I am not certain you could pull it off in 120 minutes.
Bringing a second DD to kill, as we did, made things go very fast, relatively speaking, getting a kill with 2 or 3 (sometimes a rng friend came to help). We almost never had a curative job like rdm or whm with us. TBH though, I usually necroed the fight on thief dying after 3k Rudra's storm every minute. This wasn't a big deal though because it always gave enough EXP to make the loss non-existent.
If I were going to solo the fight I would drop a DT atma, prob heavens, and replace it with RR. Sure you will take more dmg but we fought it that way prior to getting Earth Worm atma and would use only 5-6 pet foods a fight (zeta). The SS is a really big deal and RR will help break it down. If you dont get it off it will disgorge again and heal, w/o you ever doing dmg to it, and reset SS. Again, I still don't see it being worth it, unless you absolutely don't have anyone to help (which in that case id /sh for "zone boss glavoid kill" and have ppl help that way)