You have a couple too many traps as it is (what do you do when you run against Jinzo? O_o) so I don't necessarily think you should replace the Just Desserts, maybe just drop one or two.
UFO Turtle is good for thinning out your deck in general - I run it and I don't even have Fire Trooper. >_> You can't really go wrong with it.
The only real issue I see with your deck on Burn/Stall standpoint is that it looks like it has too many traps, including some that aren't useful defensively. What if you get a hand of a couple Dark Bribes and Secret Barrels, and not much else? You'd be in trouble. I do like the speed with which your deck can take down life points, though - just try to thin it out a little now. Maybe take out a Dark Bribe too?