If you read the Release the Memo meeting notes its obvious that Schiff is afraid for his life, he knows whoever he answers too will not trust what he says happened and is rushing to get the transcript out asap. I believe it is because he has to prove he did everything he could to block or delay it.
He answers to the cabal.
docs. house.gov/meetings/IG/IG00/20180129/106822/HMTG-115-IG00-Transcript-20180129.pdf