There isn't really much to justify the large jump that it had yesterday, as the earnings were just marginally good. Using the measure rule for the Good Earnings Surprise, it is already way past that so it looks like it should come back down to reality. However, watch the extended hours trading and first few moments of the open to get a better picture of where this is going.
Forgot to post the link to the Inverted Dead-cat Bounce. Also worth mentioning that the day after tends to be an even higher high but you'll have to watch the open and extended like I said before making your move.