Hayes was signed to play 2C for AV, who had coached him in NY, at age 27.
Three years and a series of injuries later, he is a bad fit at center for Torts, whose teams play a more aggressive style than AV.
Hayes has clearly lost a stride, his offensive skills are fine, but he struggles on defense, partially a lack of inclination, partially a lack of speed.
Don't see what's so complicated about that.
Hayes was overpaid at 7x7, Voracek was overpaid at 8x8.25, both starting at age 27.
Both were contracts you give only if you're a player or two away from competing for a Cup and see a limited window (i.e. you don't care about the out years).