I use the 1007 quite a bit but always at 57 degrees.
the temp range for the yeast is 55 - 68 F.
This is a direct quote from the Wyeast website
"Cold fermentation will produce lager characteristics including sulfur production. Fermentation at higher temperatures may produce some mild fruitiness."
That could be the reason.
"If you do it right, brewing is about ideas. A big impression can be made with brute force, but sometimes a whisper speaks louder than a shout." - Randy Mosher
Primary: Citrus Wheat Experiment/WLP029 & WYEAST 1056