through ones legs or five hole.This being taken from Bill Buckner(first baseman for 86' Boston Red Sox) who let a routine ground ball go through his legs to lose game 6 of the 1986 World Series.
To be surprised by an unforeseen outcome. A result of placing too much faith or trust in an individual, only to be betrayed. When betrayal by a close friend or colleague comes as a complete surprise.
having an important deadline to meet for your client only to find out at the last minute that your consultant didn't come through for you and either needs more time or did everything wrong
Skyler was throttled by his client after he explainedthat the project was behind because they had been bucknered.