Let me just clear this up now.
The answer is no. If it were true, IT WOULD BE RORY. The Doctor would never do that and he likes Rory “A lot.” He’s admitted it. He supports their marriage and refused Amy’s advances.
And besides, hybrids can’t regenerate. We know this from Doctor 10.5.
SO SHUT UP.
I tried to keep this unclear for people who haven’t seen the episode yet.
This makes me giddy. THEY ADORE EACH OTHER!