basically, you shouldn't transfer from the primary until your fermentation is FINISHED. secondary is only for clearing...you left alot of yeast behind. it is still fermenting, but doesn't have as much yeast to do the job.
rousing it may help to finish those last few points. that's probably what i would do, before repitching.
anyway, it's nothing to really worry about...it's just going to take longer, probably. rouse it (give it a good swirl, no splashing) and give it another week, then see where it's at.