Turns out the extension was holding onto resources and duplicating.
I'd still like to know what that error message means if someone from Jive looks at this.
Sorry for the delay here. This error talks about the max resource size for a specific embedded asset. This limit is meant to reduce the likelihood of long-running connections to Add-On resources that can drain the connection pool in Jive and cause blocking. Usually when people see this error, it is an errant ZIP file included or a RAW High-Res Photo/Image.
Hope that helps.