It’s quite possible. I bet it is more likely QL tightness though that you are thinking is tightness in the erectors though (or at least, it is a significant aspect in addition to any erector tightness). Heavy unilateral work isn’t good if you have problems with QL and erector tightness. You probably also have a shortened PSOAS and/or weak obliques that are causing you to place all of the load on your back instead of evenly distributing over your pelvis and into the rest of your lower body musculature…