Its been a while since I dug through this book so I had to consult it to find some useful tidbits of information.
The Blood Spirits bombarded Albion as well, leveling two cities (page 123). Albion was a mess. At least a 3 way Clan fight, plus Dark Caste/Society stuff actively happening on the ground, armed lower castemen in total uprising. The Cloud Cobras bombarded it, then the Blood Spirits did. In fact the Blood Spirits regarded the Albion operation as a success by mid 3073 (page 133).
The Spirits then moved on Tokasha and seized a large part of that important world. They were working to secure the rest of it when the Steel Vipers showed up and were surprised to fight them there. So the Blood Spirits were forced to fight the Vipers for the planet.
When the Steel Vipers attacked Tokasha it was a bloodbath for the Spirits. The Vipers refused to take any bondsmen or allow the Spirits to surrender. They wiped out three Spirit galaxies. IlKhan Andrews killed Boques in a Circle of Equals. Then IlKhan Andrews went on to declare the other Clans and their enclaves on Tokasha to be tainted, he had the warriors of those other Clans watching the Circle of Equals executed, then did the same with lower castemen in those other enclaves (possessed by the Horses and the Scorpions I think).
I read this and it makes me wonder if Spirit hatred of the Vipers grew exponentially overnight as a result of these events. Did the Blood Spirits hate the Adders? Sure. Did they eventually come to hate the Steel Vipers more? Now that's the question and I suspect the answer may be yes. And the Spirits later had the chance to do something about it and join in the anti-Viper feeding frenzy.
Its also important to note that the Blood Spirit leadership actually changed hands in the middle of all of this. With new (or in this case, returning) leadership, comes new perspectives, new strategy and new policy as to how things will be done at the Clan leadership level.
As for a call of Reaving or Annihilation against the Steel Vipers, I can't find any other vote or call for a vote in the book except the one that finally brought the Steel Vipers down and got them killed. I can't find a reference to an earlier vote, let alone the Spirits voting against it. I'm not saying its not there, I'm just not finding it.
In general, I read the Blood Spirits' actions during this period as an attempt to seize on the chaos, and with the HPGs down they decided not to wait for potential allies, they moved fast and tried to do it alone. In normal times, the Blood Spirits would have had difficulty securing a lot more territory, especially important worlds like Tokasha. But when the Homeworlds went into a state of chaos, they apparently went on the offensive and tried to grab all that they could, even from potential allies like the surviving Fire Mandrills whose long term survival prospects were shaky at best. I think the Blood Spirits hoped that by the time the chaos settled, their Clan would be at a historic high in terms of territory and resources and already digging in to keep it. Ultimately this effort cost the Spirits too much, especially on Tokasha. And they earned the mutual hatred of at least most of their fellow Clans by arming lower castemen, which seems to have made events like the bombardment of York justifiable in the eyes of everyone on the Grand Council.