Try to work it out with your original instructor since one of a good DM's attributes is to be able to work with a variety of instructors and teaching styles.
Good advice, that. I've worked with a very ADD instructor; once I learned to think in a very different mode to mesh with his style, we started to work really quite well together. (Actually, he's one of my favorite people to work with now.)
As for the question, my DM course is being team-taught by three instructors. At the beginning of the course, they made copies of the skills page of the course folder and gave one to each of us. Whenever I complete a skill, the instructor present signs it off on the course folder *and* on my copy of the skills list, so both the shop and I have our own validated copies of what I've done. One of the instructors is going on a three-week vacation in April (to Palau, Yap, and so on, as he seems to keep mentioning -- he's gonna have a blast), but it's not going to affect the course, since we have backup and multiple copies documenting what's been done. It's probably a bit late to turn it into a team-taught course, if you're just stuck in paperwork.
Anyway, there should be nothing preventing you and the instructor from handing you off to another instructor, if that's what needs to be done, but if at all possible, it is indeed good practice to work through it with the first guy. If you're *never* going to assist him as a DM, perhaps you can make a demand, but if there's even a slim chance you may have to deal with him, you really must work it out together. One thing to take into account about switching instructors mid-stream is that the new instructor is almost certain to put you through the paces again on the wet work, as they'll certainly want to know you're ready before they sign off on you -- it's not like the test scores, which can be taken at face value.
You don't have to roll over and wait for him to get around to it, of course. Since two of my instructors work at the shop, if I had to, I'd drop by when I know there are tanks to fill or gear to clean, and I'd pull a "I'll take over from you here so you can finish the paperwork for me" maneuver. Finding ways to get what you really want using mutually beneficial arrangements is a good skill to have. :biggrin: