Hi there hurtalot: I can't explain what the film says, but if it eases your mind any, I had lower back pain after kyaking in Alaska about 6 years ago - had MRI of back & it showed 'spondolysthesis' grade 2-3, at L4-5, which is no disc left & the L4 vertabrae is sitting on quite an angle on the L5 vertabrae, + critical foraminal stenosis.
One surgeon wanted to operate immediately, the next surgeon said no need to operate as I wasn't having symptoms (yet) of incontinence, pain when walking short distances; he said he'll follow my case - if I have symptoms I'll call him. My back aches but I do find quite an 'emotional' factor that goes with it, if I don't think about it I'm okay. The surgeon who said to wait on surgery looks at the individual's symptoms along with the MRI, which I like, he also said in my case do not bend backwards & of course careful driving- an accident could be hazardous (well, yea!). I've known people who've had back surgery & are worse off after a year or so. I read a great book called 'Healing Back Pain' by John Sarno, MD : he discusses many back diagnoses & why very few people really need back surgery. I highly recommend looking into this book, good luck my friend. Nancy
ps: I bought a 'bubble' seat I use at work & home - it helps me sit upright, improves the posture, works great !!