I'm still learning db2, so this question may sound simple.

If I run a database backup with the command
BACKUP DATABASE DBNAME ONLINE TO "C:\DB2_Backup" WITH 2 BUFFERS BUFFER 1024 PARALLELISM 1 COMPRESS INCLUDE LOGS, is it safe to delete the transaction logs (the S0000xxx.log files) assuming I don't want to roll back any transactions from the time of the backup?

yup, if thats a good image then u can safely delete logs before of that