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Yup. Hit it with undiluted tea and water in with the irrigation (light), wait a week, irrigate enough to flush the soil (target depth should be >= 4") .... let soil reach field capacity .... do it again for a total of 2-3 times.
When your done with your flushing, compost and CT with your over seeding.
Will this work .... don't know, but IMO it is your best bet if you want to seed before fall.