How does one purge low vibration desires?

[Agua del Cielo]

Dear Sjel,
Although i decided not to post here anymore, i created an account for answering your question.
I would like to offer a different perspective:

The "low vibration desire" you experienced should rather be understood instead of being purged.
I think this is a common counter-reaction of our unconscious control system.
Being so, it would rather be a "necessity" than an obstacle.
You experienced a higher state of consciousness, being or whatever you call it.
This is a threat to your ususal system.
The threat most probably is not that you fear the "increased love" (although love itself in the end is a great threat because it will finally dissolve the "ego").
My guess would be (since i experienced this quite often):
When you reach higher vibrational states, at some point your "dark" issues will be "visable", meaning, long forgotten and supressed emotions (and probably trauma) is about to surface (in the long run).
If you ever re-experienced or "dissolved" trauma, you will know what this means. The control system that all your life kept you from re-experiencing this will lose its grip when you raise your vibration.
So the basic mechanism is that of fear. Although you might not feel this fear consciously at the moment, it obviously must be there somewhere.

A word to the breathing technique you practice:
From your description i assume you're practicing Kriya Kundalini Pranayama. It further sounds, as if you didn't receive proper initiation. (I might be wrong though).
If it is so, then i would STRONGLY advice you, to stop it for the moment and get proper iniation first.
This technique is an extremely powerful tool, probably the most powerful i ever came across.
It's almost impossible to practice it properly without learning it from someone who has practiced it for a long time ( and thus has understood it in-depth).
Since the directing of energy has to be done really carefully (an one can easily overlook important aspects), the potential for (better case) reduced effect or even (worst case) harmful effects is quite big.
If you received proper initiation i would advice you to connect with fellow practitioners, since the arising issues are mostly the same for all, so this could be a great help.