Read till page 9, and couldn't be bothered reading anymore replies. So pardon me if someone mentioned this before.
If your tank runs off without Protect, just recast when he stands still after pulling the bunch of mobs. No big deal.
"Oh but he will die if I'm not healing after he pulls all the mobs." Then your tank deserves to die for not popping CDs to tank through that 2seconds+, either that or your AST skill Essential Dignity isn't on your hotbar. That skill sits on a 40seconds CD and will definitely be up for every pull.
If you're just whining because things are not going your way, FFXIV isn't filled with cupcakes and rainbows. 2bad4you Patient people are to be expected in Mentor Roulette, but not so much on other roulettes.