What needs to happen with away supports is an actual ruling from the spfl that specifies what percentage of your stadium you must allocate to away fans. If they can't sell them, fair enough then you can look at giving those seats to your own fans. Until something like this is put in place, as it is in the Scottish cup after all, the bickering and tit for tat allocations will continue.
As for cutting Hibs allocation? Seems a strange one when they normally do alright by us.