I routinely hear a relative add syllables to words to sound more "correct." "menu" becomes "men-a-you." "Daily" becomes "day-uh-lee." It seems to be coupled with a slowing of the pronunciation in imitation of a register of English "higher" than the casual Midwestern dialect. The subject is from Iowa and Minnesota, and has spoken German fluently, but English is the first language. What is this?
There is the term hypercorrection for this kind of phenomena, although I am not sure if it is applicable to your example.
A typical example for hypercorrection is the following: A native speaker of the palatinate dialect (rheinfränkisch) does not discriminate the sounds /i/ and /y/ in dialectal pronunciation. So High German kümmern becomes kimmern in the dialect. Trying to speak High German, by analogy, forms like *schwümmen for schwimmen come up.