I believe the bracket needs to be removed. In my 32 years of Pantera ownership, I am unaware of anyone who has removed a 10qt oil pan with both the engine and emergency bracket in place. I realize this is not the message you preferred.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.