How bad is the missalignment?
If it still sits inside the width of the bow it's prob still ok, with maybe a bit of minor nock or grip adjustment.
I wouldn't try to heat bend anything that has glue involved.
The bow I'm just finishing looks off centre, but shoots like a dream (some limb twist means it actually track right). I even shot it flipped top to bottom and it still shot great.
http://bowyersdiary.blogspot.co.uk/2012/10/maple-ii-vs-maple-i.htmlRunning a straight edge from nock to nock doesn't always give the tue picture if the re is twist involved.
I think a good test is to let the bow dangle from the string supported at the nocking point, then look down and see how it lines up (a short plumb bob helps) this is lining the string up with the centre of mass at brace rather than just the flat geometry.
Hope that makes sense.
Del