It doesnt have any leaves left so the buds are pretty much done growing, I would just harvest it, it looks like its ready to hang now the way it is, no trimming needed.
It will probably survive- I have had many large colas snap sideways and continue on until harvest- sometimes growing up towards the light after bending.
Yes you can but your buds will be as thick as your pinky and larfy. Dont defoliate healthy leaves unless you absolutely have to for air flow or trimming up the under growth a little. Your plant looks like my plant after I trimmed it to get it ready for hanging. You need leaves my friend, more leaves = more bud weight.