Yes. The real solution is to have two separate, linked bank accounts, only link one of them to PayPal. Set PayPal to sweep into bank account A daily, and then have your bank set up an automatic sweep from account A to B either daily or as it reaches a threshold.

However, even if you don't do this, PayPal transactions are via ACH (actually, this isn't a PayPal-only thing - technically anyone with your ACH account info (the stuff at the bottom of your checks!!) can push/pull money into/from your account, it's the nature of the beast) and that has many failsafes and undos available, though it is a real PITA.