Thanks for that, MfS. FYI, when I was employed by Eastern, a BOS crew on a DC-9-50 (powered by JT8D-9 or -11 engines) had an uncontained failure departing KTPA. I believe that had a locked engine or, at least a failure that induced considerable drag in the windmilling engine, and various bits of cowling hanging out in the breeze that reduced performance to the point the crew couldn't climb above about 500 AGL and considered ditching in the Bay. In any case, I flew with the F/O and he was pretty convinced that ditching was a possibility despite "firewalling" the throttle on the operating engine.
GF
It was the drag from the half blown off nacelle (burner case rupture) and as you say quite dicey to make the ATB. A wake up lesson about a half dislodged nacelle on a failed engine can = more than an engine out effect.