"(PTx explained that injury mechanism was arching back under load)". Most of the time problems from heavy deadlifting are from back bowing into "flexed" position. Most of the arching injuries I have been made aware of are from push pressing overhead pressing. Is this the case?
The biggest advice I can give is do your best to
1-Maintain a neutral back position, somewhere between flexion and extension.
2-Strengthen your midsection
4-In my experience people with back injuries who avoid "rebuilding the area" NEVER RECOVER
(Message edited by vcraig on January 24, 2006)