Are you hearing that all the time? I'm not noticing that, and if it were being simulcast to the Lansing school district you'd hear it on the BWL MA1 patch group. If you lock out 02-022 and 05-077 you should be able to hear it on the talkgroup it's being patched to.
I only heard it yesterday, havent monitored today. If its not on the BWL system, then i wonder who else it could be thats simulcasting. perhaps MPSCS? didnt hear anything wierd on that either.
What I'm saying is that if you temporarily lockout TACN & 05-077 you will see the display of the other talkgroup that it's using, maybe they linked TACN & MAIN for that transmission.