I'm seriously confused. I had some expired t-58 in the fridge and a bunch of hops that I wanted to use up so I whipped up a basic IPA yesterday and decided to use up the t-58, as well. The OG was 1.070 with 5% dextrose. I re-hydrated the t-58 and pitched it into the wort that was aerated using a whisk. My fermentation chamber is a fridge with a temp controller set to 63F. No lie, fermentation started 2 hours later and now the thing is going ballistic! I've been brewing for the last two years and I've used S-05, S-04, Conan, 1318 and a couple other strains of yeast, but this is the quickest starter and most violent ferment that I've had to date and it was 9 months expired! Is this normal for t-58?