G'day John, big fella - it is not warming up down here yet. It is just that I reckon the risk is very low. I do not think I will get frost damage nor will they be too wet. I don't get frosts in my courtyard (even with big Chinese Elm gone) - it's actually a relatively warm environment. (For example, my trident forest has not lost any leaves yet - which may (or may not) reflect the protected environs). Further, the new mix is much coarser, free draining. If anything the roots would have been wetter in the existing mix so I do not think there is any danger of rot. Lastly - I didn't do heaps of root cutting - sure I spread the roots better - indeed, I untangled heaps and I am really happy with the spread in nearly every pot. So I did something slightly more than slip-potting - but not a heap of disruption.
Mate, I'll kick myself if I got it wrong - going early like I have - but I wanted to get ahead of the August/cum-Spring re-potting curve - so took a calculated gamble. Plus - it's not like I am taking a chance on any mature stock.
Hope you're well.
Cheers,
Mark