Correct, the employer can't force you to turn up at any stage. However, in general employment you would simply get the sack. An employer can also make several legal applications with regard to an employee in that circumstance, as can the employee. They aren't aimed at forcing anyone to turn up but, for example, an employee might lodge an application under s.372 alleging that the employer has unreasonably caused them to not be able to attend work in breach of their workplace rights - "I have a right under s.340 to complain about my working conditions and when I did, the employer altered my position to my detriment so I can't show up". An employer may also (for example under s.739) make various applications that would, in effect, result in a determination of the validity of the employee's reasons for not attending work, which may then allow them to terminate, if that is in dispute.
It is also not reasonable to withhold wages unless an instrument allows for it in the circumstance. Generally speaking, this is why employees will be placed on leave or leave without pay. There is no common law allowance for you to be suspended without pay in Australia (except in rare instances where the contract or award specifically allows for it) and most smart employers avoid any possible inference of it. That being said, this is different where you might be paid for work done (eg a casual employee).
In a situation like this you could be paid a baseline wage and not match payments (for example) because those are contingent on you playing a match.
There is, but as we said, this is not a garden variety fixed term contract if we accept that the player hasn't got the right to resign from it.
The nerd in me hopes it goes to court, but tbh I think this is all just shit chat and Ice will go to Wests