I ask because some people tend to limit lower back training, rather than train it more, when it's fatigued, or not recovering well. Which I think is a mistake - you want to develop the lower back, and it's work capacity. However, since you're coming back from a mild injury, caution is warranted. Reverse hypers or "Hatfield back raises" could be good for some lower back work, since they support the waist while you train the lower back. Band GMs, starting very light, and progressing gradually could also be good.