Pretty sure I
can insert posts by you, but it will badly mess up the thread's views count.
(Method: Copy thread. Kill all posts in the copy except for the first. Copy this one-post thread as often as necessary. Merge everything.)
I wouldn't try it with a huge thread but a 2 page thread is not a problem.
If you want me to do it, gimme a link and say how many extra posts you need.
*edit*
This kind of work requires a lot of close attention to detail, so here's a detailed step-by-step guide for any mod who wants to do it - just in case.

Not to say y'all can't do it without this, it's just that it's very easy to forget a step and mess the work up. I almost forgot to Physically Remove at one point, for example. Not the worst mistake but it would have taken some extra work to clean it up.
[sblock]
First of all, keep in mind that posts will be sorted in chronological order. Several posts with the same posting date (the creation of which is the point here) will appear right after each other and thus before other posters' posts.
Second, if the thread in question is a big list of links, be aware that links linking directly to single posts in the thread will be messed up by this because the order of posts in the thread will change. However, links linking to a specific post in a thread are not affected.
Step 1
Go to the thread in question.
Select Thread Tools -> Move/Copy Thread.
Type in 'Copy' under New Subject. (Or whatever. Just make sure to name it something other than the original thread.)
Under Destination Forum, select Copy Thread to destination forum.
You now have a shiny copy of the thread.
Step 2
Go to the copy. Make sure it's really the copy and not the original.

Select Thread Tools -> Close Thread
Select Thread Tools -> Delete Posts
Uncheck the Delete box on all posts you want to keep.
Change Delete Options to Physically Remove. (This is
very important.)
Click Delete Posts.
After the posts have been deleted, select Thread Tools -> Bump thread. (This way, you can't lose sight of it.)
Note: It's probably a good idea to edit out the content of the posts at this point.
Your copy now only consists of the posts you wanted.
If these posts suffice for your purposes, go to Step 3. If you need more copies, do what's described under Step 1
with the copy and then Merge the two copies as described under Step 3 (substituting 'copy A' for 'original thread' and 'copy B' for 'copy'). Repeat this as often as necessary to get the posts you need, doubling the posts each time.
When you're done, go to the original thread and Merge the thread now containing all copies in.
Note: After merging two copies, select Thread Tools -> Bump thread before proceeding with something else.
Step 3
Go to the original thread.
Select Thread Tools -> Merge Threads
Paste the URL
of the copy under URL of the Thread to be Merged
Click Merge Threads.[/sblock]