I wouldn't say it was a "bubble bursting". I mean maybe. Who really knows? I would say Bitcoin received a lot of unnatural growth in December and started to correct over the past month. If you look at it's chart it looks to be more on course with a steady growth pattern in relation to November's numbers. The unnatural growth was mainly attributed to all of the media attention it received.
Regardless, your post was very informative and I appreciate it!