I’m not sure I understand what you are trying to achive, but I suspect you want to:
– show current post in carousel
– show all other posts (without post shown before)
– single post
If thats what you need one more loop – so you can first show your current post, then to show all posts without the current one.
https://gist.github.com/palmiak/34389b42a33667de1a57194d21871fde