Well, nevermind. It appears they re-enabled on their own. By the time I checked again the DISABLED message was gone.
Someone may want to log this issue as a bug. Below is the message (verbatim - copy and pasted) from the log that repeated probably millions of times:
05:09:19.854|7fed577fe6c0| Info|DBServ.cpp(547): SL:Application '' is not initialized
05:09:19.854|7fed9f1d86c0| Info|DBServ.cpp(547): SL:Startup completed for
05:09:19.854|7fed9f1d86c0| Info|DBServ.cpp(547): SL:ConnectionThread. Application start failed
05:09:19.854|7fed9f1d86c0| Info|DBServ.cpp(547): SL:ConnectionThread. Initialization of new connection is completed.
05:09:19.854|7fed9e1d66c0| Info|DBServ.cpp(547): SL:Application '' is not initialized
05:09:19.854|7fed9e1d66c0| Info|DBServ.cpp(547): SLDestroying SLAPPImpl::~SLAPPImpl():127.0.0.1:5485<->127.0.0.1:35946
05:09:19.854|7fed9e1d66c0| Info|DBServ.cpp(547): SLDestroyed SLAPPImpl::~SLAPPImpl():127.0.0.1:5485<->127.0.0.1:35946
05:09:19.854|7fed9e1d66c0| Info|DBServ.cpp(547): SL:Closing socket channel(8) 127.0.0.1:5485<->127.0.0.1:35946
05:09:19.854|7fed9e1d66c0| Info|DBServ.cpp(547): SL:Socket channel has been closed 8
05:09:19.855|7fed9f1d86c0| Info|DBServ.cpp(547): SL:ConnectionThread. Accepting new connection
05:09:19.855|7fed9f1d86c0| Info|DBServ.cpp(547): SL:ConnectionThread. Connection from: '127.0.0.1' has been accepted
05:09:19.855|7fed9f1d86c0| Info|DBServ.cpp(547): SL:ConnectionThread. Configuring new socket.
05:09:19.855|7fed9f1d86c0| Info|DBServ.cpp(547): SL:ConnectionThread. Starting new application
05:09:19.855|7fed9f1d86c0| Info|DBServ.cpp(547): SL:Socket channel(8) 127.0.0.1:5485<->127.0.0.1:35960
05:09:19.855|7fed9f1d86c0| Info|DBServ.cpp(547): SL:Stage 1: no appID specified
05:09:19.855|7fed9f1d86c0|Error|DBServ.cpp(94): UNKNOWN application from 127.0.0.1:35960 to 127.0.0.1:5485. Conenction rejected: connection protocol failed