The yellow wool is a tiny desertbiome, and that is why the temple spawns.
Two aproaches could be taken:

1. Check how much of the structure would be in the correct biome before spawning it
2. Somehow make sure biomes this small wont happen
   Id go for 2, as the small biomes also sometimes result in something like desert - tiny extremehills - ice mountains, which will look like desert - icemountains

Btw: this was in 1.8.9, i would be very surprised if it wouldnt have happened in 1.7 too though, thats why im posting it here

Changing structure generation is out of our scope. What's generating the biome layout? That's the primary problem.

Agreed, and I don't know the answer to that question myself

Moving this to the 1.8 tracker.