Complex sentence: When the NHL returned for the 2005--06 NHL season, Weiss re-signed with the Panthers as a restricted free agent and would go on to endure one of his most frustrating campaigns as he missed the majority of the season due to a serious wrist injury.
Split into simpler sentences: When the NHL returned for the 2005--06 NHL season, Weiss re-signed with the Panthers as a restricted free agent. He then endured one of his most frustrating campaigns, missing the majority of the season due to a serious wrist injury.