I think I'd do it like that:
Create new table in new schema:
db2 create table <sch2>.<tab> like <sch1>.<tab>
Copy data:
db2 insert into <sch2>.<tab> select * from <sch1>.<tab>
Drop old table:
db2 drop <sch1>.<tab>
Recreate Constraints, Indexes, etc, from original table:
I would do that via a db2look output