Hi,
No.
The order is already created before the user redirection (to paypal).
It is a paypal requirement to have an order id (to be able to confirm it afterwards).
So, even if the user pay it or cancel it.. The order is already created.
You'll be able to find dozen of thread talking about that.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.