Newspaper actually can cause spraddle leg(there are many causes,but this is one cause) as they get slippery and chicks have no traction. Best to put down paper towels or other such product over newspaper so they have good traction.when you do get your new ones, be careful what bedding you put them on; for the first week or so we usually use newspaper or feed bags - stay away from shavings until after a few weeks. You gave it your best, sometimes nature wins.
Reason shavings are not used for first couple of weeks,is so chicks can locate their feed,then when they are able to identify their feed,shavings may be introduced.
