If the previous owner ran head on into something, that could push the forks back which will make handling more (too) responsive. If the upper part of the fork legs appear to be in line with the headtube, it's probably not bent.
The Sirrus Sport looks kinda er, 'sporty' to me, so it may indeed be a more responsive ride than bikes you may have ridden as a kid. I think you'll appreciate the quicker handling once you get used to it.
As a hybrid, it should be somewhere on the middle on the twitchiness scale, not too hard to handle, like a criterium or triathlon bike might be.
Enjoy the ride! Let us know how it goes.