I remember Mathieulh comment that the BD drive has different modes for each kind of disc it's reading. So I really think it's extremely unlikely that anything like ESR would work with the PS3 simply due to a coincidence of these "modes" making such exploits impossible.
And of a security standpoint, having such "modes" only make sense as their goal was keep people with like for example PS3 linux from authenticating a PS1 or PS2 disc then extracting security information from it (like the XMB would do to indentify which type of disc is on the drive).
So I honestly believe that ESR or anything similar is simply impossible on the PS3.
SCPH-10000_GH-001 SCPH-15000_GH-003 SCPH-18000_GH-008 SCPH-30001_GH-005 SCPH-30000_GH-016(V4) SCPH-30001_GH-010(V4)
2xSCPH-10190, 2xSCPH-10350, 2xSCPH-10280
"**** j0 hackers!"
-Sjeep (As seen on TOXIC OS ELF...)