Ok. 
It was just a gentle spike.
Just ran a Lair, where the Chiron didn´t launch Fire Worms the first round and after it began, there was a pause for a round a few rounds into the combat, before it launched again. Not sure what happened, can´t remember if I didn´t move that round or if by change was outside “hearing range”(??!) of dead Pandorians … It´s weird.