Can an Expander Flip on Its Own and if So How?

I recently had to have my expander replaced. My 1st surgeon who put the expander in relocated and I had to find another doctor to complete my breast reconstruction surgery. Upon finding a new surgeon she informed me that my expander had to be replaced due to it being inserted backwards or it had somehow flipped over. Upon changing the expander my surgeon informed me that the old expander was full of needle holes due to the 1st surgeon doing injections anywhere in the expander. Is this common?