Okay, this scenario has been playing around in my head for some time. Then I figured it would be interesting to see what you people would do. I would like to assert that this is a fictional thought exercise. Any similarity to real/current events is purely coincidental.
Say you have a campaign nearing completion that has a specific mission designed around a certain asset. However, said asset happens to be a leaked, and supposedly super-secret, exclusive asset to an unreleased mod. You were not aware of circumstances the moment the mission was designed and built as you stumbled upon it. Re-designing the mission is out of the question at this point, it would take too much time and effort and re-writing of the plot and core gameplay design. From all you know, the mod is dead, or basically dead, just holding onto assets in case someone picks it back up. You have no idea who's the leader of it anymore, or if anyone even is, thus contacting them is pretty much impossible.
Thus, there are the following options:
1) Give no ****s and release anyway when it's ready (worry about the lawsuit later, if it ever comes)
2) Replace the model with a custom designed asset made to fit the requirements (delay the release by weeks to months reinventing the wheel, possibly with lesser quality)
3) Wait for the mod to release (delay the release by years possibly or even never)
4) ??? (any other ideas?)
What would you do?