Originally Posted by OldDog
I of course finished my workout (including stiff-leg dead lifts) because I'm a moron.
your problem right there.
Seriously, back problems can be a bitch. The only good thing about them is that they can also be agony and turn out to be just a pulled muscle.
Ice packs for the immediate moment. See a physio asap. Don't screw around. Season's coming.