I just picked up John Franco (LHP) and there's been two odd instances where he's been pulled after retiring just one batter! Is HAL trying to tell me he's not such a good option against right handed batters or something?
I have seen this behavior with my backup closer (Dave Righetti 90s). He would come in for one batter in a save situation (my regular closer was fatigued). HAL would then pull him and bring in my main closer at F4--or worse. I finally set my backup closer to not be removed before F8. That solved my problem.
However, I can't answer your real question: Is HAL trying to tell you something?