This check can cause misfires if a session reuse job has files that take long. It will cause the condition to match, and it will reset to SUBMITTED (not FAILED!) the transfers in READY, causing, potentially, a duplicated transfer.
We should get rid of this check. Need to make sure an stalled transfer doesn't leave a READY forever, so add a test for that too (i.e. session reuse, two files, first segfaults or sigkills)