1. Would Spyke know its his mom?
Probably not if he hasn't seen her since he was a young pup.
2. Would she know Spyke is her baby?
Impossible to say whether she would recognize his smell...it's possible, but dogs don't have the familial relationships that humans do. She will see him as just another Havanese.
3. Would there be any behavior issues to watch for?
No more than with any other Havanese.
4. If Spyke was "acting out" would she correct him?
Again, it's possible, but not because she's his mother. My oldest dog, a Tibetan Terrier, mothers (corrects) every dog who comes to our house, whether they are hers or not.
5. Would she be a playmate to him or would it be too much for her?
Depends on her personality and the energy of both mother and son. In general, well-bred Havanese love their own kind and once they get to know each other, should be best buds. Their relationship will develop based on their individual temperaments, not based on the fact that they are mother and son.
If you are ready to take on another dog, I wouldn't hesitate to try it. Your breeder should be more than willing to help you through the transition and to take her back in the event that it doesn't work out. OTOH keep in mind that if Spyke 's bored shenanigans is a nuisance, his mother could have the same tendencies and Spyke would have a partner in crime.
Spyke is a handsome fellow. You will love having two I suspect!
I should say that in my experience, mothers and pups rarely recognize each other, unless they see each other often during their lives, but my mothers absolutely remember their breeders! I have purchased all my breeding girls from other breeders and when they see each other again, its a lovely reunion!