But he mentioned something about it saying "removing a loop" but he didn't know what this means?
Yes, sometimes the Eclipse test returns a test result stating 'all OK, but ILS loop still in place, please remove and retest' or words to that effect. This is not a failing as such, just an oddity with the tester. The slightly worrying thing is that the engineer who visited hadn't seen it before, this would imply a lack of experience, and all that might entail.
You definitely saw 40000 sync on his tester ? What IP profile does the BT tester now show ??