Interesting thread but don't write Cousins off just yet.
Young people recover from amphetamine addiction all the time.
I would seriously doubt though that he can get his game together in Perth as even if he does stay clear he will be returning to an organization that hasn't been able to contol the problem in the past and quite evidently has similar ongoing issues with the likes of Fletcher and Kerr.
By the way this has gone though with WC suddenly and unusually taking a firm line, and with Cousins having been drug tested only yesterday, it seems likely to me that Cousins is one of the several on two strikes anyway and that WC are anticipating another positive result and a lengthy disqualification. In other words nothing to lose.
Adding it all up I reckon Cousins may have played his last game for the West Coast.If so Ben will be looking for a new home, probably in Melb next year. If I am right then any Melb Club that doesn't look at taking him on would be mad.