I wouldn't think you have to worry at 68. That's a good temperature for most ale yeasts. According to the Wyeast website, the range for 1056 is 60-72. If you're used to fermenting this strain at around 62, the flavors may be a little different from what you expect, but I wouldn't worry too much about the harsh fusels.
Read my brewing blog here! Last of the Zyme Lords
BOUSIRIS BOUERY - Home of the Zyme Lord
The cans of Leinenkugel's had masking tape on them with JOHN'S printed in ink. Amy looked around me and said, "John is protective about his beer, isn't he?"
"I put that label on there. When company comes I want them to know the Leinie's is his, not mine." - David Wong
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