As you can see the Flames were a much better team at 5 v 5 with Nakladal on the ice.
It's worth noting that a) it was only a 27 game sample size and; b) he was playing sheltered minutes against softer competition but the results remain encouraging nonetheless.
He has proven he can at least be a bottom-pairing option at the NHL level and the Flames can surely get him locked up for pennies.
As such, I think they'd be smart to bring him back.