if you just take 1 week off you can just redo the last week you actually did and it should be fine, no? You should check your form too though... maybe some movement of the pelvis crept into your squats?
in another thread you said you squat "well below parallel". That's not necessarily a good thing since, to go deep, it means (for many people) that you have to loosen things. Could be the source of your problem right there.