There wasn't much wrong with Foye's D last night. The game was won by Paul/Blake/Jordan and I don't recall Foye really being involved with any of them throughout the night. I know there's more factors that go into it, but the bottom line is Randy played good last night despite what the +/- shows.
That was my observation as well. Foye was the least of the Jazz's problems yesterday, and honestly kept them from getting blown out in the first quarter.