Generally, yes, you'd work the reverse side decreases on a wrong side row, since you can only bind off at the beginning of a row.
It helps to picture which edge is which when working the decreases. If you know you're working on the arm edge or the neck edge, it reassures you that you're working the decreases properly.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry