Bloomberg had an interesting observation that the last 2 times that we have posted a GDP increase of 4.5% or more after a recession (1991 and 2001) the SP followed this by dropping 10%. I think the market had anticipated the good GDP showing and took that as a cue to take some off the table assuming that a similar decline was going to occur.
If this is the case we may have a little bit more to fall before pulling out.