they should be fine, pinching stems is actually a form of LST. As long as there is no break in the stem you should be fine. I can pinch a stem to the point that I hear the pulp squish. When I release the stem it will lay over flat, 90 degrees. Two days later it will be upright again and ther ewill be a little knuckle where the pinch was. You should be fine. Pinching causes other stems and shoots on the plant to grow while the one you pinched is recovering.