I'm running code 8.2(1) on both devices
I can confirm that the problem is reproducible
I can restore telnet and ssh access by removing and re-adding the relevant lines in in the config (via the ADSM CLI interface)
no telnet <subnet> <mask> INSIDE
telnet <subnet> <mask> INSIDE
With this config saved, I reload the current active router, causing the other device to become active, and the same problem occurs. I cant get back in to the new active device on telnet or SSH.
ASDM is fine, and I can verify that the commands that should exist, do exist in the configuration by checking the ADSM CLI interface
if I remove them and re add them through the same ASDM CLI interface, I can get back in again