Lu,
You could get Asymmetric VRS in a CH-47 in straight flight at low speed. Say for example the front rotor went into VRS first the nose would drop which the pilot would correct with differential collective using an aft cyclic movement making the VRS worse and pitching nose down even more. So yes if you turned it sideways you could get it to look like the V-22 situation but for the CH-47 it will always cause a pitching problem.