I tested silence effects in my game with just basic Oblivion and SDR running, and I was able to cast spells after the silence spell expired. So I am sorry to say that there is really nothing I can do. And in all honesty, it may not even have anything to do with my mod whatsoever.
The only other thing I can think of is that there is a conflict between OBSE elys pluggy and OBSE av uncapper. Although I am not aware of any at this time.
I am sorry that I could not be of more help.
After a series of tests fulfilled with new start-game saves and avu libraries single activated I concluded that the issue apear in conditions if KSE and AV_Uncapper libraryes are both activated AND the following settings are:
Sneaking Detection Recalibrated.ini _______________________JCNAVUncap.ini equivalents_______________________________Value
set SaeIniQ.avuBlindnessDecay to ________________________set JCNAVUncapQuest.favuBlindnessDecayRate to__________1.95
set SaeIniQ.avuBlindnessGrowth to________________________set JCNAVUncapQuest.favuBlindnessGrowthRate to__________.25
set SaeIniQ.avuChameleonDecay to_______________________set JCNAVUncapQuest.favuChameleonDecayRate to___________1.95
set SaeIniQ.avuChameleonGrowth to ______________________set JCNAVUncapQuest.favuChameleonGrowthRate to___________.25
Probably, bugs can be coused by such values been applied for other settings.
Hopefully I'll be able to play with complement of all three mods.
Thank you very much for your obliging help!