Hobogoblins dont appear in this phase as far as i remember, but this only as a side-note. I also thought about that, but the biggest problem is that as soon as the other guardian will fall i have a really hard time to bring down those oracles. I have to go meele for them and if the Templar teleportes or is on the left side i have no chance to reach them. This means the whole team will be marked or someone have to change sides. Both will cost us much time. I will try today how long i can drop the relic before we get wiped. I think i can shoot 1-2 times with the rocket-launcher while his shield is down. Also we could try to suppress his teleportation: After his shield is down the circle will show where he is going to teleport, if you step into that circle you will cancel his teleport and will be vulnerable for a longer time. BUT Minotaure will spawn. I dont know how many and where they will spawn, but we could try that i suppress his teleportation and then take down the Minotaur, which is pretty easy with the relict. We could just try this and see how it goes.

The Hobogoblins spawn on the pillars and snipe. You are right: If the second guardian is down it gets tricky... Hm. I think you shouldn't drop the relic. Continue to charge the super when his shield is down and maybe we will have the next shield-down-phase in no time!?