It sounds like there will probably be a second attempt at passage next week, but my sense is that the Democratic opponents really want (and intend) to hold firm. I watched a Judy Woodruff interview with Peter DeFazio (D-Oregon) on the News Hour last night, and he was practically seething with resentment against President Obama - it might have been the angriest I've ever seen a Congressman get (especially against his own party's President)!
Nancy Pelosi had been holding her cards close to the vest about her position on trade, but yesterday she came out forcefully against the bill.