Very very unlikely to do so! Anything is possible though... I hit my first block after only 2 weeks of mining with a single SP20 (it wasn't at this pool unfortunately)! Funny thing is, I missed out on seeing the "best share" for that block in the web interface. That morning I was adding 3 new miners and had unplugged/replugged to move it from 120V to a new 240V location. Apparently it happened just seconds prior to when I unplugged it. I was stunned when I checked my email after powering it back up!
I'm getting a new miner and will be unplugging/plugging things again today. Can history repeat itself?