Yes, the oven was a bit hot, because the pastry I used called for a hot oven for the first 10 minutes. They rose at least an inch above the pan, and I was sure I would have an explosion. They are also not gooey inside, like you said they would be, so they lost moisture and consequently, the filling would have shrunk - which also indicates that the oven was a bit hotter than you expect for the recipe. The pastry was fine when I cooked it in the sandwich press for the pop tart experiment, so I could have had the oven lower since sandwich presses don't get to anything like oven temperature.
This is the first time I have made flaky pastry, and it turned out really nice. SO commented on how nice the pastry was as well. I think I may not have had an explosion because the oven was hot - the top would have formed a better crust before it rose. But it wouldn't have risen as much if the oven wasn't as hot.
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If the first time you make something it turns out well, you have won. And the next batch will be better, because all recipes require fine-tuning for local conditions (pans, ovens, whatever).