I find it interesting that you say you're not going to question my experience or when it happened, but then you go on to do exactly that.
We were there during my nephew and my brother's spring breaks (2 different school districts). There were many districts both around them, and around us (in a different state) who were on spring break at that time. I consider that "spring break season." Crowds were not 9s or 10s, but they weren't 1s or 2s (aka "the slowest of the slow") either.
We rode once during EMH, once w/a very early FP return window (9:45 or 10, can't remember which), and then once with a return window right before we left the park (somewhere between 12:30 and 1). Since we could pick up a second FP at 9:45 or 10 (whichever time it was) - when the 1st window opened - the return windows were not near closing yet. TSMM was the last thing we did before leaving the park.
I am not saying, nor have I said, that this was *normal* - I wouldn't ever contend that wrt TSMM. I was simply responding to whether or not it was *possible* during a time of year that was *not* the "slowest of the slow."
It wasn't a crazy insane busy time of year, but it wasn't the slowest of the slow either. The only "slowest of the slow" time of year trip we've taken is December 2007, and that was before TSMM opened.
We generally were able to get a second set of TSMM with paper FPs.
In fact, for our Spring Break 2012 trip, I took detailed notes of our FP situation, as this was right when they started enforcing return times, and I wanted to share our experiences.
Here are the FPs from our HS and EP days:
Tuesday, March 27th (Crowd level 6, per Touring Plans)
Hollywood Studios
8:45 am--arrived and grabbed TSM FPs for 10:10 am
10:30--returned to ride TSM. Ride was down. I asked the CM what would happen to our FPs. She informed me that we could use them to ride at any time during the day.
10:30--grabbed second set of TSM FPs. Return time was 6:00.
12:30--got three RNRC FPs with 5:55 returns. Other two members of the group got Star Tours for 1:55.
Saturday, March 24th (Crowd level 4)
Epcot
9:15--arrived and pulled Soarin' for 10:10
10:10--pulled TT for 11:30
11:30--got another batch for Soarin' for 2:30
Thursday, March 29th (Crowd level 7)
Epcot
10:15 am--arrived and got Soarin' FPs for 2:35 pm
So for us, re-rides at HS and EP were very possible at HS and EP, even during a moderately crowded time. We also didn't need to be there at RD to get Soarin' FPs. We would have been able to get TT on the 29th as well, but we had other plans and went back to the resort for an ADR.