I don't think the Anglican Mission in America patronizes the ECUSA convention. However, there are still ECUSA congregations and leaders trying to recover a Christian direction for their organization, so there are sure to be fireworks.
There were also those who refused life boats because they wholeheartedly believed the Titanic couldn't sink.
Both AMiA and ECUSA are currently within the Worldwide Anglican Communion, but there is no direct relationship between the two.