Holding Trips against a flush draw

[9LIVES]

You can look at it that way, I guess.

The better way of looking at it is this: You have 10 outs to improve going to the river (the case K [quads], three A's, three 5's, and three J's). That's one more than his nine. And yes, as long as a non spade hits the turn, he loses an out unless he's drawing to a straight flush.