[en] A recent experiment has measured analyzing powers in d(rvec p,π^-pp)p in a geometry which selected the quasifree two-body reaction rvec pn→π^-pp(¹S₀). Analysis of the results indicated a significant contribution from a very-short-range part of the nucleon-nucleon interaction. We show that the analyzing power data measured in the above experiment is reasonably well described by a unitary NN → NNπ model containing only the one-pion-exchange driving force