That's correct. I think they should bring him back to testify. Comey made a good legal case against Hillary then failed to follow up after a meeting between Bill /Attorney General Lynch.
Comey talked to Congress about Russian Collusion involving the Trump campaign with absolutely no evidence
Comey refused to investigate unmasking and leaking, which are felonies.
He's not in a good position and it would have to be a bipartisan hearing.