Yeah, I just checked online. So my company (or ex-company, the one I worked for at the time anyways) bid against like 3 other shops to work on the campaign. We pitched work but it didn't win. We did get to see early footage and they had voice recording footage of all the turtles' artists, and I specifically remember Jason Biggs, the guy who used to voice Donatello (he reprises his role as D) and Sean Astin with a really thick Irish accent. It made zero sense at the time to me or my teammates, so it looks like they had him just do his regular voice instead.
Wasn't sure if someone told him to riff off Samwise, but it was really distracting.