This presnets as classic Anterior Derangement - or the Derangement 7 of the original McKenzie System.

Approx 3% of patients have this. The hypothesis is that the bulge is slightly anterior and clearly lateral. The flexion aspcet of exercises provide teh reductio an centalisation.
The suggestions on anthony are logical but it seems that anterior dernage has not been considered. Check the history of the injury - good chance it is an extension based injury. References include McKenzies book PArt 1 and also try {Busanich, 2006 ; Long, 2004; Clare, 2004; Laslett, 2005}