"yanking around" is misleading. These planes do not responding well to a heavy hand. They fly as if they are bieng yanked around but they are sensitive beasts,. Thin wings, low wing loading and relatively short span with short tail moment makes them rotate in pitch and roll axis very quickly with little help.

I have a Black Horse extra 300s which handles beautifully and flies incredibly well with a GMS 47. Seagull, like Phoenix, is a sister brand to Black Horse so their ARF's come from the same area in Vietnam if not the same factory. Noting wrong with the design of their arf's either. Twictchyness is just a characteristic endemic to small, scale aerobats and gets worse the smaller they become. Some people get around this by offering a 3D version with thicker wings. These are easier to fly and you can "yank" them about.
Perhaps a .46 is not enough power for 3D but it is ample for sport aerobatics and will pull the Edge through everything that a pattern can throw at it. It won't 3D very well no but you will need an expert hand to handle that thin wing post stall anyway.

I know of your arf well as I saw one fly in the hands of a fairly competant intermediate pilot recently  and I tried my hand at the sticks. It was powered by a OS46AX and I liked it so much I ordered one but the supplier was out of stock. (I love the Edge 540 design). I opted for the Extra instead (it was instock). Everyone has warned my about twichy characteristics of smaller aerobats and it is true. Nothing about the brand or the design, its just the way small, scale aerobats behave.

Try a 3D version instead. I know Green Model (Chinese company) makes an edge 540 with a 3D wing in 46 size.

if you want a sweet flying scale aerobat then you should go to around .90 size and bigger


To get your plane to handle well you will need to place your battery behind the wing main tube and check the balance. These birds typically balance around 90-100mm from the leading edge measured along the centreline of the fus.