Those fluent in Spanish (or armed with Googletrans) can follow
the tweets of Bufet Almeida about this mess. It's one of Barcelona's leading law firms and probably the most respected in Spain regarding digital rights. They've been dismantling the "disconnection laws" for a while and explaining why yesterday's pantomime has no legal meaning at all, but still puts the Catalonian government in an extremely difficult position.
The referendum only came to pass by enacting a law that was promptly declared ilegal. As such, it was a referendum held under a government deciding it was not bound by Spanish laws. Worse, even, it had a well defined and clearly ilegal goal: to allow an UDI.
Voters were not doing something ilegal by voting and should have not been hit. That's where Rajoy lost the plot. The referendum itself (the legal act with political implications) was.
The rest is just chasing tails.
Do you know what's also frightening? That so many nationalists substitute reality with their own when they are not getting what they want. The Conseller de Presidencia de la Generalitat, Jordi Turull, has already said,
on the record, on national radio, today, that they won't renounce a declaration of independence.
-"I'm telling you, our commitment to the people of Catalonia is irrevocable"
-"The independence?"
-"Yes. But we want to parlay. We want to engage in politics. That's we've been asked for"
Minute 4:40
http://cadenaser.com/programa/2017/10/11/hoy_por_hoy/1507692864_976179.html
The rest of the interview is just Turull trying to weasel out of the interviewer's questions by saying that they want to negotiate some extremely nebulous terms by means of quantum linguistics, but as the yanks say, them's the breaks. The point is that they want to see what the Spanish government offers to the Catalonian government but without standing down on their intention of declaring the independence of Catalonia.
So at best, he's a liar, full of shit and using that worthless memorandum of intention towards the proclamation of the independence of Catalonia as a shield, knowing that it has no legal value. At worst, he's actually validating what was put into that document, passing it as factual and binding no matter the situation.
That is not negotiating in good faith. That's the contrary of it.