Reaching 8 so fast felt like a spike, the consequent drop in value seemed more a correction than the beginning of a downward trend. I'd expect it to keep increasing as demand increases and supply becomes increasingly restricted.
It never actually reached 8 for normal people who were changing less than ten thousand US at a time- 7.8 or so was the highest I heard of.
But its true- vacation season is ending, and the annual January surge in demand for dollars by vacationing argentines is about over.
Its really simple supply and demand, and demand is starting to ebb, as people go back to work.