Dusty is obviously making sure that everyone knows that he will definitely be coming back to preseason training in good shape this year...
Tucky could also making a statement. The best thing about this is, rather than players taking their training into their own hands and over doing it (ie Cotch, Connors and Jack a few years back), all off season training is individually designed and montored by the club.
I see this as a great sign of commitment by the players and a public expression of intent.