Whoops!
The KMT's domestic PR strategy to promote the ECFA is to say, "we need this or our country's economy will be devastated and marginalized."
However, that PR strategy puts the government in a very difficult negotiating position, as China can demand more favorable terms and postpone the signing, as seems to be happening now. The KMT is then left with the choice of caving in to Chinese demands that don't benefit Taiwan or contradicting their own insistence on the ECFA's necessity.
Whoopsie-doodle...