First off you guys are so far off base with how much honor your can earn. You cannot get 7k honor from 12 av's. It would take me many weeks of additional grinding to earn that much honor back . Also my losses are across 15 characters so how long would it take me to regrind their lost honor on 15 characters? As to the question of why I didn't spend it...

This is the response from a GM on my ticket. As you can see he is not aware of the Blizzard fail. I didn't spend it because they were suppose to exceed 4k. There are some people who converted all their valor points to conquest so they can stockpile even more. Another reason I didn't spend it is because the honor could have been used to buy BOA items, enchant materials and more. If I knew their patch notes were a lie I could have spent as much as I could to lessen the blow of not getting jack shit for my effort.

With Patch 4.2, Conquest Points have been converted to Honor Points, potentially exceeding the 4,000 point Honor cap. The next Arena and Rated Battleground season will begin for level-85 players approximately one week after the launch of 4.2 and will coincide with the awarding of Season 9 titles and mounts. Any Honor accrued above the 4,000-point cap will be converted into gold at a rate of 35 silver per point. In addition, Season 10 rewards will be made available for purchase with Conquest Points awarded during the new season.
Here is their lame ass blue post on their fuck up. I spent months of earning conquest points so it can be converted to 35 silver. FUCK YOU BLIZZARD!

During maintenance the change that was intended to be applied for the start of Season 10 next week, which was to cap Honor Points at 4000 and convert any points above the cap to gold, was inadvertently applied early. This means that everyone who would have down-converted Conquest to Honor over the 4000 cap had those additional points converted to gold at a rate of 35 silver per point and sent to them via in-game mail.

We’re still researching what steps led to the error, but unfortunately due to the nature of the currency conversion that took place, we’ll be unable to reverse the change, remove the delivered gold, or reinstate the surplus Honor Points.

We apologize greatly for this error.