At the risk of sounding pro-geologist....
....whatever that means.
I watched the talk described in the Space.Com article and the speaker (or anyone else) wasn't suggesting an eruption from OM as the direct cause of the streaks.
Her thought was that these are from a flow of water. As it evaporated once exposed to martian atmospheric conditions, the disolved material is left on the surface which we see as the streaks.
Dave McKay's suggestion that it could be directly due to life drawn out of dormancy by an addition of water seemed to raise all sorts of eyebrows for various different reasons.
The abstract of the talk is here:
http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1840.pdf