I'm not actually all that bothered by Tem Morrison doing the voice... it makes sense in the 6 movie modern revisionist consistecy world, but god... some respectable voiceover direction could have been applied. That's pathetic.
I did a ton of ADR work on a couple of Disney games I worked on, and we had to loop out a bunch of really recognizable actors with sound-alikes (we did it for David Spade and James Garner). Its not freaking hard to 1) coach an actor to time his delivery to fit the scene 2) give the actor audio and video reference for the scene. Even when you can't synch an actor exactly by ear, it's easy to fix timings in ProTools to make it freakin' work. It's obvious they had him waltz into a booth and rattle off lines, and they slammed it into the mix. Unbelievable.
How hard is this:
Tem sits in a booth.
Sound engineer cues up references lines from take used in previous mixes (heard for 20 years).
Tem sees line on monitor. Tem hears line in earphones.
Tem says line. Tem hears beep.
Tem says line again. Tem hears beep.
Tem says line once again. Beep, once again.
Engineer lines up take in ProTools, sees how well it fits, plays back for VO director.
VO director OKs or doesn't.
Apparently the people working on the OT DVD release are complete and total IDIOTS. Amazing.