Ravana EX glitch with Plunge

Time: Aug. 2, 2015, approx. 3:20pm MST
Frequency: Always (was able to reproduce)
World name: Sargatanas
Character name: Rylock Ventel
NPC name: N/A
Monster name: Ravana
Class/Level: WAR 60 (produced by DRK 60)
Party or solo: Party
In-game time: N/A
Area and coordinates: Thok ast Thok (Extreme)

Steps:
1. Have a DRK main-tank Ravana
2. After the first Tapasya / during Atma-Linga use Plunge
3. DRK will be trapped underneath Ravana unable to move or use skills
4. Ravana will be unable to move/turn, or perform any actions other than auto attacking, if his target is out of range he does nothing
5. The DRK and Ravana are trapped like this until Ravana is killed

Potential extra step: We had someone lagging out both times this occurred, they were not the DRK. They lagged out at different times (once before the glitch had occurred, once after), unsure if this is necessary to produce the glitch.

Connection Specs
N/A

PC Specs
-=-=-=-=-=-=- System Information -=-=-=-=-=-=-

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SYSTEM_CPU Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (8 CPUs), ~4.0GHz
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SYSTEM_STORAGE F:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 931.413GB SYSTEM_FREEDISC_SPACE 10.310GB
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SYSTEM_DIRECTX_VERSION DirectX 11
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SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (60Hz)
SYSTEM_GRAPHICS_DRIVER nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
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SYSTEM_GRAPHICS_DRIVER_DATE 17/06/2015 3:10:27 AM
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3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_GRAPHICS NVIDIA GeForce GTX 970
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY2
SYSTEM_GRAPHICS_CHIP GeForce GTX 970
SYSTEM_GRAPHICS_MAKER NVIDIA
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SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (59Hz)
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SYSTEM_GRAPHICS_DRIVER_DATE 17/06/2015 3:10:27 AM
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3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_SOUND Speakers (Realtek High Definition Audio)
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SYSTEM_SOUND Realtek Digital Output(Optical) (Realtek High Definition Audio)
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SYSTEM_SOUND_DRIVER_DATE 24/04/2014 5:46:50 AM
SYSTEM_SOUND Realtek Digital Output (Realtek High Definition Audio)
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SYSTEM_INPUT {D00159F0-618D-11E4-8005444553540000}
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SYSTEM_INPUT {D00159F0-618D-11E4-800A444553540000}
SYSTEM_INPUT_NAME Razer BlackWidow
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