If your not aware of co pitching sour check it out . I would do the boil though. I take it your not adding any hops .
This is exactly what I did, boiled the mash and soured in the fermenter. Crossing fingers at this point. LolDid you boil before souring? If you did and added the lacto bacteria after the boil, it should be no problem. I don't sour in the kettle, but sour in the fermenter and then add yeast after it is sour, with no boil inbetween. Once the yeast start making alcohol, the souring will stop (really slow down).
However, if you didn't boil at the start, you will have lots of different bacteria in there, and I'm not sure what will happen.
I did add a very small amount amount of hops. 1oz of hallertauIf your not aware of co pitching sour check it out . I would do the boil though. I take it your not adding any hops .