(2.x End SPOILERS) That's about seven shades of fouled up...

[treuhavik]

The Dark Magicks the Teledji was referring to was most likely the Echo.

'Tis exactly what he was referring to.

I think it was said that those with the echo were fear and shunned for their powers

Path of the Twelve: Fade to White

However, it might still prove prudent to refrain from informing those not on the Path of your awakening. Very few will understand this gift, but many will seek to judge you for possessing it.

But if you must [Refuse to join], then I pray you heed these words: those with your gift are oft shunned by those who do not understand it. To most, you will be perceived as a kind of voyeur, violating the innermost sanctums of the soul. If you are caught, you will be punished. You may even be killed. And there will be no one to protect you.

EDIT:

Ul'dah and The Garlean Empire

I have dealings even with merchants of the Empire. Through them my influence reaches the Garlean elite, with whom I thought it possible to negotiate a peace.
Alas, their leaders are set upon the complete annihilation of Eorzea. A point upon which there is scarce room for compromise.
Once the truth of this became apparent, we Monetarists granted our support to Raubahn and his Immortal Flames. But our largess extends no further than our borders. We will not finance the whims of the other nations.

Though this quote is from 1.0, I think it still holds its worth. Lord Lolorito has no desire to help Garlemald ruin his business in Ul'dah or with the rest of Eorzea. Nuff said.

[Starcade]

If the Monetarists / Lolorito wanted a civil war they'd have sparked it.

That's just it. I think they did.

Ul'dah is a powder keg ready to blow; the only reason it hasn't descended into civil war is because information on the incident is being withheld.

I think the problem is that they may not have counted on Teleji getting cleanly offed. There was that point about Lolorito not being pleased with the handmaiden.

[Starcade]

Though this quote is from 1.0, I think it still holds its worth. Lord Lolorito has no desire to help Garlemald ruin his business in Ul'dah or with the rest of Eorzea. Nuff said.

What if he feels he can make more money in a Garlean-rule Eorzea? Premise #1 on my part is that this dissolves the current Eorzean Alliance.

I think it's clear he'd serve exactly who gives him the most money.

[Cilia]

That's just it. I think they did [spark a civil war].

I think the problem is that they may not have counted on Teleji getting cleanly offed. There was that point about Lolorito not being pleased with the handmaiden.

Not quite. I'm convinced Teledji was always intended to get offed by Raubahn; Lolorito planned even that. It was either that or he just couldn't resist mouthing off. Only Teledji and Lolorito know that, and we're not going to be able to ask either any time soon.

Either way, the main thing they didn't count on was you being freed. The point of the painstaking effort they went to with the coup was to make it look as lawful as possible. That way power would cleanly transition over to the Monetarists without any kind of civil strife. It was a perfect setup given the state of corruption in Ul'dah.

I don't really know what the scene with the handmaiden and Lolorito means. She simply states "everything has been arranged as [he] desired," he lets out an exasperated... grunt(?) and the scene fades to black. I don't think he's dissatisfied with the handmaiden, but that something in his plans went awry - possibly Teledji mouthing off and getting himself killed, as we've examined.

[myahele]

Perhaps the actions of the scions with the help of GC to defeat Gaius and co emboldened the monetarist/Lolorito to do what they did, especially in light of Omega weapon.

The defeat of both the 7th and 14th division in the last 5 (?) years made them realize that - while powerful- strategy and cunning can defeat them. With Omega right in their doorstep then perhaps they hope to go against Garlemald should need be. The other city-states will begrudgingly agree since it's the lesser of the 2 evils + it'll be the closest to status quo