Here is that play moment by moment btw:
STAGE 1
The play begins. Green is up very tight on Boogie up top, likely to prevent either another three or an easy passing angle. E'Twaun is involved in a little flash down low, but he just changes direction and heads to the corner without even pausing to look for a pass (which Boogie couldn't have delivered anyway with Green smothering him), which suggests it was really just a fake to maybe make Tyreke either lose him or follow him out of the paint to clear it for Boogie. Jrue and Darius barely move the whole play from their spots spotting up on the elbows. I think there may have been a Rondo flash to the rim backdoor option, but it's hard to be sure. He moved very halfheartedly into position, and his defender was aware and completely smothered any idea there, so not sure. Notice that Gasol is maintaining contact with Darius.
STAGE 2
Boogie uses Green's tight play against him and has clearly gotten by him, and there is a straight line right to the hoop. Tyreke has seen this and is lingering in the paint, and Moore is getting open in that corner, albeit screened off behind the 7'1" Gasol. Still, that looks promising.
STAGE 3
Boogie still has the edge on Green, but Gasol makes his decision, abandons Miller out there, and steps in hard to shutdown that lane. This is the point in my initial watch where I thought that Boogie fumbled it, but it turns out that wasn't the case. Notice as Gasol steps into the lane Tyreke begins to cheat out toward Moore in the corner.
STAGE 4
Boogie stops his drive and picks up his dribble in face of a completely solid wall formed by Gasol and Green. Rondo is completely screened off. Jrue is just standing there I assume just as an outlet. But even though Boogie has been cut off, the play has still largely worked -- the star player has drawn the double team, and there is only 1 defender (Reke) to cover 2 guys (Moore and Miller) at the three point line. Miller is a little behind his field of vision, but you can see Boogie looking directly at Moore, but Reke has slid over to threaten that passing lane. Actually a half second before this frame as the double team wall was forming, it looked like Boogie may have been peeking through it to see if Rondo was there, but can't be sure -- he might have been just looking at the hoop. In any case, he's definitely looking at E'Twaun, but Reke's too big of a threat. Miller is still wide open though as he checks through the options...
STAGE 5
Except he doesn't get the chance, Gasol swipes down perfectly, in live motion it looks cleaner than that still, and Boogie doesn't have time to get it to Miller (who as mentioned was only 1-6 from 3pt land so not a wonderful option there but a wide open one) before it's stripped. Again in the live action it looks like right as he's being stripped Moore might be pointing out Miller to Boogie, but alas, too late. Despite freeze framing it, it all happened very quickly. If Gasol keeps his hands up rather than swiping though, Miller is going to get that wide open shot.
So...New Orleans seems very much in the Saints' pockets now, so let's use a football analogy. That played out very much like Drew Brees, in the red zone on the final play of the game, going through his checks. Sees one wide receiver blanketed in the back of the endzone (Rondo), wants to go left to another wide receiver (Moore) but the free safety is drifting underneath and without a perfect pass it's going to be either deflected or intercepted. But the defense brings a blitz off the corner at Brees, leaving his TE (Miller) wide open down the right sideline...except just before Brees can check down over to Miller he's suddenly sacked and the ball comes loose.
It's one of those plays that could have worked but did not because a great sack artist did his thing and made the big play to save the game. Gasol made a great play, you just have to tip your hat.