Mashiach had not been set to any positions (SB or R). He only had been signed to the game.
Van der velden had been only the starter at that positions. Matas had been the Backup, and Blavia the Reserved.
To summarize all this strategic feature, it just don't work as supposed and expected to be.
Should I wait next time also for a full moon? :+)
Then it works precisely as it always had. When garbage time strikes, your coach wants to remove all your starters and put all your bench players in. If you have someone on your bench who is not a starter, he will come in as long as there is a starter for him to replace. If you had Mashiach as the backup to your PF, he would have replaced him instead, but since you didn't have him assigned as anyone's backup, it picked the position he'd best fit in that didn't already have a backup assigned.
If you want to get someone 48 minutes, you need to make sure they are starter, backup, and reserve, and that every player you have dressed is a starter or backup to some other position. Guys that are floating bench players will still replace the S+B+R guy.
Whether you think this should be how it works is another story. I know that there's a Suggestions forum somewhere, and I imagine that someone should be able to point you in that direction if necessary. ;) But it's not a bug so much as a somewhat silly but consistent application of the game logic in this case.
[edit: As far as van der Velden, you had your starting SF and C as his backup and reserve, so because it was garbage time, and because the coach won't bring a starter off the bench unless he has to in that scenario, he never came out. ]
Last edited by GM-hrudey at 2/16/2012 3:30:31 PM