IMO - the advice given above - "not to do anything too hasty" is good - sit on it and just "be" - nothings spoiling...the fact that you're feeling in 2 minds I think is good...sit and wallow!
Out of that will come a reasoned and rational decision...
take your time!
For the time being - what can you lose by concentrating your efforts - as you have indicated - on the search for a new job?
BTw - what is your area? subject? specialism?
Best - and merry Xmas and a Happy New Year!
GFI
Me: 40ish W: 40ish Together: 20 ish years Married: 10ish Years