Leolaia:
I'm just back and start here (incredible how much you can miss when you're out of JWD for a few days!).
This interpretation of the Law was, in comparison to the strict rules of the Pharisees, extremely liberal and followed what Jesus regarded as the "spirit of the Law" (as expressed in Leviticus 19:17-20 and Deuteronomy 6:5 which, in the view of many rabbis and Jewish-Christians, summed up the entire Torah) than the "letter of the Law"; thus the Jesus of the gospels repeatedly advocated "breaking" purity and Sabbath laws when they conflict with more important matters like social justice (e.g. the treatment of the poor, the hungry, the disabled), that is, where following the letter of the Law would conflict with showing love towards your neighbor -- the highest principle in the Torah. Thus they viewed themselves as still following the Law and did not believe that Jesus abolished the Law.
I sincerely doubt the early judeo-christian sources which insisted on "fulfilling the Torah" would have regarded Jesus as "liberal" and the Pharisees as "strict". I suspect it was exactly the contrary: their Jesus, like John the Baptist and the Essenes, would dismiss the Pharisees' stance as hypocritical and overly accommodating. One echo of this view is Matthew 5:20:
For I tell you, unless your righteousness exceeds that of the scribes and Pharisees, you will never enter the kingdom of heaven.
The repudiation sayings are a good example:
"It was also said, 'Whoever divorces his wife, let him give her a certificate of divorce.' But I say to you that anyone who divorces his wife, except on the ground of unchastity, causes her to commit adultery; and whoever marries a divorced woman commits adultery.
The anomistic Jesus and his controversies against the halakha come from a quite different source, i.e. Hellenistic Judaism / Christianity, and are mostly introduced into the Gospels picture by Mark. Only when this portrayal of Jesus is mixed up with the positive Torah sayings do we have the notion of Jesus as a liberal rabbi with a lenient interpretation of the Torah.