What do you mean by buckets?
Take a knife, utility or old butcher anything sharp and you can cut them off, even the big ones fairly easily.
I used to cut the large ones off of trees some times when landscaping as it saved time rather than try to loosed the root ball from the container.
Take a sand shovel and dig a circle around the bucket, as close as you wish to the depth of the shovel and use the shove to pry the bush out of the hole then cut the bucket length wise and replant.
