The only other reasons for it that I can think of is that they're trying to artificially raise the amount of BTC they're "paying out" and/or the amount of BTC people are depositing by paying money to themselves...
or it is some sort of arrangement where the pool claims a share of the "profit" or something?
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
otherwise there is simply no point doing it... they're just wasting money on fees and making the unconfirmed transaction chain longer.
![Undecided](https://bitcointalk.org/Smileys/default/undecided.gif)
The last cloud mining company I knew who did something similar was hashocean.com (and we know how that ended)...
I still want to know what cloud mining company this could possibly be?