For those who can't be fruitcaked looking the Blizzard response to this, here it is.
Some Blizzard guy wrote:
Through a hotfix we’ve recently removed the ability to tame a Grimtotem Spirit Guide. Players who have already gone through the trouble of taming the creature will be able to keep them unchanged. This hotfix only removes the possibility to tame this creature from here on.
The removal of the spirit guide has been debated within design discussions for a while now as to what impact the pet and its precedent has on the game.
The unintended nature of the taming, the undead status of the guide, appearance of the wolf in relation to the feel of the hunter class, and the complex processes of taming were all issues touched upon and discussed.
Ultimately the discussions brought us to the conclusion that this should not be a permanent addition to the pet selection available to hunters; however, those that have already tamed them should be allowed to keep them due to their efforts in obtaining one.
Wow, that sucks. I wasn't intent on taming one as I'm a poor ******* and a bit much effort for me (A lazy ******* as well), but for those who set up the effort, money and co-ordination to do this only to be denied, it sucks. Had Blizz decided to get rid of it during the next patch with ample warning then thats ok, but to stealth hotfix it, as North said thats low. And with this another pet thats actually good looking is throw out the window for 'appearance of the wolf in relation to the feel of the hunter class'. So as said in the thread, plauged boars, bears and ghost cats are more to the hunter feel? It seems Blizz kinda stuffed up a bit on this one.