But, we got it back together. Sable did well on the "park it" exercise, even though we hadn't been practicing that either, and she was remarkably steady on the long down despite the antics of the Labrador next to her. (I did have to verbally interrupt her twice, but given the situation, I think we were doing well. "down" is one of the commands I use daily.)
Next week won't be any better, since I'll be out of town and we won't get in much practicing, but at least I can show up on time and with my own equipment again.