One thing I noticed is that the city and state values are null when you identified that particular address, but you have it typed in in the rematch box. If those values are not in the address locator you built, that might make the address search invalid. I've built address locators before with out a city and state field, (just based on street and zipcode) and when you put the city and state in the search it can't find it.
Also, depending on how picky the address locator is, there is a difference between "st" and "STREET". You might try lowering your match candidate score at least and see if it is at least picking up a candidate.
Hopefully that helps.