Red light, can't stop, so I spin the wheel

Week 2 of Starting Strength:

Squat: 145
Bench: 155
Deadlift: 185

DB Military Press: 40
DB Bent Over Rows: 47.5

Dips: 2x8
Chin Ups: 2x5 with 70lbs assistance

My numbers are up everywhere except my squat and rows. On Wednesday, I squatted 160 but realized that my form was horrible; I wasn't going deep enough. I ran into a similar problem with the rows; I was getting the weight up, but my not high enough. Checking my ego, I lowered the weight today on both and did sets that I was proud of the form.

My lower back started to hurt this week a bit, and I can't help but think it was the poor form in those two that contributed. Hopefully with this little ego check I can keep on putting up more weight with better form and better results.