Forced bonding Snarry with angst and good sex. Gee, wonder who wrote this one? ;-)
The pacing and rhythm is very good -- it felt self-contained and complete. Satisfying. Two things I liked the most were how you described Snape's experience, particularly in this part:
It was beyond frustrating; it was edging on terror. It was as though he were all these separate, fleeting memories and not someone who was composed of the whole of them: a floating, insubstantial version of Severus Snape who had no place anywhere.
Man, that's so visceral and I understood it perfectly. It made me stop and reflect, yes.
And the second thing I liked is much more carnal -- when yells and anger turn into hot kissing and frottage. *Guh*