Snape's worst memory: the Pensieve Scene

[amcelfre]

No: HPFGUIDX 68385

When the book described Snape removing memories into the Pensieve, I 
jumped immediately to the conclusion that he was removing memories 
pertaining to secrets of The Order, since there was such a concern 
that Voldemort could be aware of what Potter was aware of. Was anyone 
else surprised when the memories turned out to be personal?  I 
suppose that the pensieve could have contained more memories than we 
saw, since Harry was interrupted in his viewing of them...